trek powerfly models

Trek Powerfly

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Summary of Reviews

We have read all expert and user reviews on the Trek Powerfly . In summary, this is what cyclists think.

15 reasons to buy

• Owners reported an impressive range of up to 80mi and 7000ft of elevation.
• A 71yo owner easily handled a daily climb of 500ft, on a 25% grade driveway.
• A desert resident said the Powerfly rode easily, through soft sand.
• Tektro hydraulic brakes were deemed responsive and “pulled hard”.
• The 5’s fit and finish was described as “beautiful and rugged”.
• ‘Touring’ mode was great on roads, while ‘eMTB’ mode was excellent in the woods.
• A removable battery made it easy to mount the powerfly on vehicle racks.
• Powerfly drivetrains pedaled smoothly on the flats, despite the bike’s weight.
• The Bosch Performance CX motor exhibited plenty of torque on climbs.
• One owner cooed over the Powerfly 4’s metallic red paintwork.
• The Powerfly 7’s TransX dropper-post made mounting and dismounting easy.
• Overweight riders found the Powerfly’s carrying capacity to be more than ample.
• One reviewer found that the Powerfly 4’s 100mm of fork-travel covered needs.
• Shifting, range and gear spacing were lauded on the Powerfly 5’s drivetrain.
• Some reviewers felt that the weight of the bike aided stability.

7 reasons not to buy

• The Powerfly was heavy, and onerous to pedal up hills without assistance.
• Some owners would have liked to be able to easily add a second battery.
• The Powerfly’s high-level component spec made it a pricey option.
• Some owners felt that the Powerfly’s paintwork was easily chipped.
• One daily user reported delayed engagement of the power assist in snowy areas.
• Schwalbe Smart Sam tires punctured easily, on the ‘Sport 4 Equipped’.
• Some owners sought a way to lock the motor without removing the battery.

Bottom line

Expert reviews, trek powerfly 5.

The Trek battery holds a good charge… I reckon there’s enough power to last 60 to 80 miles if you’re careful.

Trek Powerfly 4 on Exmoor Review

…outstanding fun with steep descents and river crossings followed by challenging climbs which the Powerfly managed with such ease! …I was surprised at the sub-20-mile range I achieved on this test-ride…

User Ratings

Your rating, best electric bikes.

Bike Comparison

Forum discussions.

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Trek Powerfly 7 LT Review

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• Trek Reviews
• All Mountain Electric Mountain Bike Reviews
• Electric Mountain Bike Reviews
• Full Suspension Electric Bike Reviews
• Mid-Drive Electric Bike Reviews
• A stealthy, long travel, all-mountain electric bike with longer wheel base and adjustable seat stay hardware to optimize geometry for climbing and descending, proprietary "Active Braking Pivot" rear suspension reduces skipping, Knock Block headset and Hartzell Hug impact-absorbing downtube bumpers allow for straight downtube
• Trek-invented Boost hub spacing improves spoke bracing angle and support for larger plus sized tires, quick release thru axles are sturdy and easy to work with, direct-link rear suspension stiffens the chain stays and bottom bracket without compromising performance thanks to the DeonAir rear shock
• Beautiful battery integration, Bosch PowerTube 500 disappears into the frame, keeps weight low and center, provides space for a bottle cage mount and accessories above, sturdy locking core from ABUS with keyed-alike code, battery has a built-in handle for secure removal and transport
• Bosch Purion display does not have an active Micro-USB port, the PowerTube 500 is heavier than the older PowerPack design, longer wheel base isn't as nimble and the motor integration is flat vs. angled up (unless you get the carbon model), the motor is heavier than the competition, produces more noise, introduces some drag when unpowered

Video Review

Introduction

Body position:, suggested use:, electric bike class:, learn more about ebike classes, availability:, model year:, bicycle details, total weight:, battery weight:, motor weight:, frame material:, frame sizes:, geometry measurements:, frame types:, frame colors:, frame fork details:, frame rear details:, attachment points:, gearing details:, shifter details:, brake details:, seat post length:, seat post diameter:, tire brand:, wheel sizes:, tire details:, tube details:, accessories:, electronic details, motor brand:, motor type:, learn more about ebike motors, motor nominal output:, motor peak output:, motor torque:, battery voltage:, battery amp hours:, battery watt hours:, battery chemistry:, charge time:, estimated min range:, estimated max range:, display type:, display accessories:, drive mode:, written review.

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The Trek Powerfly electric mountain bike models have been completely redesigned and updated for 2019, and EBR was invited to attend a launch event at Mammoth Mountain resort in California to check them out for this review. I brought my friend Brandy, who is a beginner mountain biker, and we spent the day hearing about updates and then going for rides (up and down the lower sections of the mountain). Mammoth sits at roughly 11,000 feet (3,352 meters) elevation above sea level, and there was a small forest fire burning nearby during our visit… so it was awesome to have electric assist, to make it easier to breathe. Summertime is beautiful in the Inyo National Forest, Mammoth is a lava dome volcano and the terrain is really unique and varied (featuring soft volcanic pumice in some areas and steep jagged rock in others). We got to interview one of the Mammoth staff and learn about the resort’s rich history of innovation… and there was a little celebration happening because the mountain has become one of the first in the US to officially allow Class 1 electric bicycles on national forest land. Anyway, it was pretty warm in the afternoons and I’m certain that we couldn’t have ridden as far or stayed as cool and comfortable on traditional mountain bikes. It certainly wouldn’t have been as much fun for the two of us to ride at a similar pace together. I’d consider myself an intermediate mountain biker, but I have an injured left knee and have become a big fan of e-bikes as a way to keep up with advanced riders and just go further.

All of the Powerfly electric bike models from from Trek share the same Bosch PowerTube 500 battery and Performance Line CX motor. They range from affordable hardtail models called the Powerfly 5 and Powerfly 5 Women’s (which has a slightly lower, sloped top tube), up to the Powerfly 5 FS (full suspension), the Powerfly 7 FS, the Powerfly 7 LT (long travel) which was the focus of this review, and the Powerfly 9.7 LT (a carbon fiber long travel version). If I were purchasing one of these models for myself, I’d probably go with the 7 FS because I don’t need the longer travel suspension for aggressive downhill riding and prefer the all-black color scheme on that model, which hides the black motor casing. If money were no object, the Powerfly 9.7 LT would be nice because Trek was able to tilt the motor a bit for a nicer looking integration and carbon fiber tends to reduce jitter and weigh a bit less. The 7 LT came in around 52.3 lbs (23.7 kg) which is about average for bigger suspension, thru axles, plus sized tires, and the PowerTube 500 battery (which weighs more than the older external PowerPack plastic batteries). In recent years, I discovered that Trek created the wider Boost axle and bottom bracket standard. This allows for a stronger spoke bracing angle which supports plus sized tires (2.6″ to 3.0″ width). You can see that on these bikes, and I was told that the Q Factor is 190 mm and that the frame was made a bit long to help keep the front wheel down on steep descents. Despite this, I managed to lift the front wheel on a couple of occasions during our ride test. Trek has another innovation in store for people who are willing to spend some time unscrewing bolts… the seat stays can be made slightly longer or shorter by flipping this washer called a Mino Link which changes the fork angle by about one percent. I haven’t seen this on any other electric mountain bikes. Same goes for the Lock Block headset, designed to stop the crown from bashing into the downtube in the event of a crash. Other frames utilize curved downtubes that aren’t as stiff. The rear suspension design uses a rocker link and vertical shock position to keep as much weight directly below the rider (at the center of the frame) as possible. Older Trek models had a floating pivot design but I was told that they have moved towards direct frame mount in an effort to stiffen the chain stays and bottom bracket. The rear wheel mounts to a pivot point and benefits from an Active Braking Pivot (ABP) design meant to isolate suspension movement from braking, to keep your rear wheel in contact with the ground and reduce stiffening and brake squat. Lots of fancy proprietary engineering happening here. As a more casual rider, I was drawn to the clean internally routed cables, tight motor casing with clever molded chain guide and alloy skid plate (with bottle opener), double-sided slap guard and chain suck protector wedge, and powerful 203 mm hydraulic disc brakes with quad piston calipers. As someone who frequently rides with just one hand on the bar (because I’m filming), it’s nice to have good brakes. For whatever reason, the brakes were squeaking a bit during my rides, and that could be due to some hand oils on the rotors from transport, assembly, and demos. It was great to work with the Trek team to be fit to the frame properly and then have the suspension sagged to my body weight. Both air shocks have black anodized coatings to minimize stiction, offer rebound, and compression adjust… they felt great. With five frame sizes available for each of the Powerfly models coming to the US, and a vast network of dealers, you’ll be able to find a great fit and get set up properly like we were.

Driving the bike is a planetary geared mid-motor that’s rated 250 watts nominal and 600 watts peak. Depending on the market you’re in, the top speed may be 32 km/h (20 mph) or 25 km/h (15.5 mph) to comply with local regulations. It’s a Class 1 product, meaning that it utilizes pedal assist only and is allowed on the widest number of trails (including at Mammoth). With a peak torque rating of 75 Newton meters, it’s one of the most powerful centerdrive electric bike drive systems on the market, but it’s also one of the loudest. If you’re riding on gravel trails or through the woods, the high pitched motor sound is mostly masked by tire contact. What’s so impressive about this system is that it responds to rear wheel speed, pedal cadence, and pedal torque over 1,000 times per second and incorporates software driven shift detection. Bosch is well known for their motor controller system and the Performance Line CX motor offers an eMTB mode that was developed in tandem with professional mountain bike riders. The motor itself weighs a bit more than some of the competition at roughly 8.8 lbs. There’s definitely room for improvement here, but Bosch has earned a reputation for quality and reliability. They were one of the first big companies to enter the US with brands like Haibike and have faithfully served the North American market longer than Brose, Shimano, Yamaha, and most others. What you trade in millimeters and grams is made back through reliability and leading performance. Perhaps my favorite part about this motor, and a feature that is especially relevant to electric mountain biking applications, is the higher pedal RPM support. Basically, you can pedal fast in a high gear and the motor will continue supporting you at up to 120 pedal strokes per minute. I tried to demonstrate this in the video review above… Some other motor systems cut out at 100, 110, or begin to fade near 120. This motor can handle steep climbs but also supports faster spinning on cross country sections. It empowers you as a rider vs. forcing you to adapt to electric assist. I also appreciate the walk mode feature that was working on the latest batch of Powerfly ebikes. This is a feature that most earlier (pre-2018) Trek models had disabled, but it comes in very handy for those moments when the terrain is too difficult to ascend or you’ve got a flat. The 11-speed Shimano Deore XT drivetrain empowers the Bosch mid-drive to climb and can easily pedal the bike beyond the top assisted speed. You’ve got an 11-46 tooth cassette and a proprietary 15-tooth (38 tooth equivalent) chainring to work with. The motor utilizes a reduction gearing system to spin the 15 tooth cog 2.5 times per single crank revolution and this causes a bit of mechanical drag that eats into efficiency when the bike is unpowered or pedaled beyond the top assisted speed. Some benefits might be faster starts and stops along with excellent chain retention… but the chain is also positioned very near the chain stay, so there’s more contact happening as you ride over bumps. Thankfully, the Deore XT derailleur does come with a one-way clutch system, a little grey lever that can be clicked into the up position to tighten the derailleur spring and reduce bounce. Position it in the forward position for easier wheel maintenance.

One of the most exciting new design features that Trek has introduced for their 2019 mountain models is the Bosch PowerTube 500 battery integration. In the past, Trek has done a great job of matching and smoothing the external plastic PowerPack battery… insetting the packs and even using plastic covers for protection and aesthetic enhancement, but it still stuck up above the downtube and stood out. It limited space for adding bottle cage bosses and other accessories in the main triangle of the frame. The PowerTube, by contrast, is completely hidden inside the downtube and it stays out of the way completely. The battery bay is wide open when the pack is removed and this actually makes it easier for shops to adjust shifter, brake, electrical, and seat post dropper cables. The battery pack is encased in an aluminum alloy shell and has a second layer of alloy protective covering screwed onto the right side, painted to match the downtube design of each specific model. We were told that the shield does not add to the structural integrity of the frame (and for the carbon fiber 9.7 model it is still aluminum alloy) so it definitely adds some weight. In addition to the shield, there’s also a plastic top cap with flip-up handle. This is a welcome feature because it makes removing and transporting the $900+ battery much easier and safer. You first have to unlock the pack from the left side of the frame and then it pops out about halfway before you can press a lever on top (where the handle is) and pull it the rest of the way out. This two-step approach is also very nice for safety, but it only works on the way out… When you’re mounting the pack, you actually have to insert the key and twist it on the left side of the frame while trying to balance and push the battery pack from the right. I wish the halfway step did not require a key so that the process of balancing everything could be less precarious. I asked about this and was told that Trek wanted to make the locking mechanism secure and reduce rattling, so this is why the key must be turned. Anyway, I do appreciate the thought that went into putting the battery door on the left side of the frame vs. the bottom (where the pack could drop out easier on removal due to gravity), the top (where the pack could collide with the top tube from below), or the right (which would encourage riders to lay their bikes down on the more delicate drivetrain side). But still, the key port is on the left, so if you do lay the bike down it could be a challenge to reach under and twist. The charging port is also on the left side of the frame, directly in the path of the left crank arm. The Bosch plug interface is a wider proprietary design that seems sturdy, but it’s still worth being careful not to snag. There’s a little plastic door protecting the charging port and this is a nice upgrade from the stand-alone rubber plugs I see on some other models that could get lost when they don’t have leashes. I do recommend being delicate and thoughtful when laying the bike down on the left side because the larger 203 mm disc brake rotors could get bent easily (especially in off-road environments with sticks and rocks strewn about). Amazingly, the left chain stay has a 20 mm threaded tab for adding a kickstand! So, if you’re buying an all mountain electric bike and want to ride it around with a jittering stand, you can do that! Or, you could ride it around an urban environment and take on curbs, grassy hills, and pretty much anything else, and still stand it up straight in your garage and at the bike rack. Nice one, Trek :D Just like the older Powerpack batteries, the new PowerTube can be charged on or off the frame, and Bosch continues to lead with their compact, lightweight, faster 4-amp charger. I’d definitely remove the ~7.4 lb battery before lifting the bike for service or mounting it to my car rack. The battery has a little LED indicator on the base (where you plug it in) that communicates a rough estimate of fill level. To maximize lifespan, keep the battery charged over 20% as frequently as possible and avoid extreme heat and cold. The PowerTube is longer than the older PowerPack, it’s less universal because of the proprietary covering that each company is making for themselves, and it’s less available to travelers (or between bikes in the same family due to the covers). Sure, you could borrow a different colored battery for a long trip if you and a friend both have Trek ebikes, but imagine trying to stick this thing into a backpack or pannier bag. It’s just not as compact or convenient as the PowerPack… So I kind of miss that from the older Powerfly models, which still looked great. The 36 volt 13.4 amp hour size is about average for this generation of ebikes, and the lithium-ion cells are above average in terms of quality and warranty support. I really like and trust Bosch, but compared to the custom 36 volt 17.5 amp hour packs for some Brose powered ebikes that actually weigh less, it leaves something to be desired.

Activating the electric systems on this bike is fairly straightforward. You charge and mount the battery then press the power button on the top edge of the little display panel, which is mounted within reach of the left grip. This is the Bosch Purion display panel , one of the nicer compact offerings on the market right now. It cannot be swiveled to reduce glare easily, is not removable for protection, does not show as many menus (missing Clock, Max Speed, Average Speed, Trip Time, Shift Recommendation), and does not have an active Micro-USB charging port like the larger Bosch Intuvia display . However, it keeps the handlebars clean and may not get damaged as easily in the event of a tip. This is a very popular display panel for electric mountain bikes, which often strive to go “below the radar” and limit fancy accessories that could get broken or attract unwanted attention. I have grown to accept it but have a few tips for use… the + and – button pads that raise or lower power for assistance click in at an angle towards the right. They are attached near the left edge of the control pad and pivot in towards the LCD. The right edge is their sweet spot, sometimes even the middle can be difficult to click in or just inconsistent. The screen itself glows faintly in white at all times, which shouldn’t draw much power, and is handy when it’s early morning or later at night and you need to read it. Once you get the hang of things, you really don’t have to look down at all because you can notice the clicks of the button pad and feel the boost in power. Furthermore, if you set the drive mode to eMTB (which is third up from the bottom: Eco, Tour, eMTB, Turbo), you might not want to click at all because the mode is so dynamic and good. Holding the + button will turn a lights icon on and off but since the Powerfly models don’t come with lights (at least not in the USA), this doesn’t really do anything. Some dealers may be able to wire in lights for you at an extra charge, and this could be really cool for people who enjoy moonlight rides and want to take advantage of the high capacity battery onboard. Holding the – button will cycle through trip distance, odometer, assist level, and range. This range section is dynamic, so you can see the bike calculate how far it thinks you can go based on the last mile of riding, your current state of charge, and the chosen level of assist. On the lower edge of the control pad, mirroring the power button, is a walk-mode button. When you’re in any of the four levels of assist (not Off) press walk-mode once and then hold the + button to have the motor slowly assist you when walking the bike, as mentioned earlier.

This review video and writeup was longer than normal because I wanted to provide some guidance for the entire lineup. Trek is a leader in the cycling space, one of the top three manufacturers globally (Trek, Giant, Specialized), and their electric bicycles are some of my favorites. Trek didn’t pay me to say that and I didn’t get paid for this review… but they did provide a really cool experience for my friend and me. The past six years of my life have been dedicated to electric bikes, ever since I got a knee injury and wanted to keep commuting to work daily. My preference is full suspension mountain bikes because I also have neck and back injuries… and I love the new plus sized tires that provide increased float, traction, comfort, and reduce deflection on big rocks. It’s neat to see a few different levels of bikes, a women’s specific model with slightly lower standover height, and the carbon frame option. I was riding the 17.5″ frame and probably would have been better off on the 18.5″ because I’ve got such long legs. The Trek rep named Ross told me that they were targeting more options for the mainstream “middle of the bell curve” and that makes a lot of sense. It’s nice to have a dropper post, fully adjustable suspension, and a frame that is well-balanced front to back. the drive systems are positioned well and perform incredibly, but do produce some extra noise compared to some competitors. For those who are new to the 650B tire size utilized here, it provides the rolling momentum and lower attack angle of 29ers with increased width for traction. It makes perfect sense for an electric bike because the added weight and drag of the tires are offset by the highly efficient motor. The Bontrager tires that come with this model have reinforced sidewalls to handle lower pressure (increased tire flex) and the tires and rims come tubeless-ready for easy conversion. You’ll get less pinch flats, save ~200 grams total, and get fewer flats because of the self-sealing nature of tubeless sealant. As always, I welcome questions and feedback in the comments below, I’ll do my best to answer, and you can connect directly with other owners and enthusiasts in the Trek electric bike forums .

• The Powerfly line of electric bikes from Trek all share the same battery and motor integration, this keeps costs lower and makes fixes easier, I was amazed that all six of the models being introduced to the North American market for 2019 (Powerfly 5, Powerfly 5 Women’s, Powerfly 7 FS, Powerfly 7 LT, Powerfly 9.7 LT Carbon Fiber) come in five frame sizes! This ensures optimal fit
• There are actually two “medium” frame sizes to choose from, I rode the 17.5″ but would have preferred the 18.5″ which is slightly larger (since I have longer legs), Trek really focused on the “fat part of the bell curve” with their sizes to serve most common use cases well by having two mediums
• Trek only sells through dealers at this point, and this strategy allows them to provide the best quality control, assembly, and fitting… but they are also one of the three largest bicycle brands in the world, so their prices aren’t as high as some competitors, it’s the best of both worlds
• The motor is protected from rock and log strikes by a long alloy skid plate, it’s vented to improve cooling and the large vent hole in the center is shaped into a bottle opener… which is fun, I really appreciate the plastic casing design on the right side of the motor as well, this doubles as a chain protector and guide, it’s even designed to help clear mud and prevent chain suck
• Excellent use of slap guards, there’s a long rubber strip on the top and bottom portions of the right chain stay, this will keep the paint job in tact and reduce noise on rough sections of trail
• The smaller Bosch chainring makes chain slap more common than with a standard sized chainring but the Shimano Deore XT derailleur minimizes this when you click the one-way clutch into the up position, tightening the springs to reduce chain bounce
• Overall nice aesthetic, the paint job isn’t super busy and Trek has matched the black rims, seat post dropper, and suspension elements (including black stanchions) to the black paint accents… this is the case on all 2019 Powerfly models, I like the 7 FS best because the black motor blends with the black frame color
• Sturdy thru-axles, Boost hub spacing, thicker 35 mm fork stanchions, a high-volume rear suspension, and frame-mounted rear suspension interface (compared to their older floating pivot) increase frame stiffness, handling, and efficiency of power transfer
• Air suspension tends to be lighter, more adjustable, and these RockShox components have hard anodized stanchions to reduce stiction and perform better on smaller bumps, I appreciate the the proprietary rear pivot ABP design
• The Bontrager XR4 tires are designed to be lightweight but still have reinforced sidewalls to be durable when running at low tire pressure if you decide to go tubeless, they ship tubeless ready with strips and valves included for easy conversion and that’s what the Trek reps recommended to me… I was told that plus sized tubes can run 100 grams a piece and tend to go flat more easily when running with low pressure, so it’s decent weight savings but most importantly helps you reduce pinch flats and reduce maintenance effort
• The headset uses Knock Block to prevent oversteer and subsequent frame damage, even if you really crash hard and break the chips inside the Knock Block, the downtube has rubberized strike points for further protection
• Internally routed cables look great and stay out of the way but are still easy to service because of the wide opening for the PowerTube battery pack
• Internally mounted battery pack keeps weight low and centered on the frame, it stays protected inside an alloy (or carbon fiber) tubing structure with an alloy cover, Trek really thought things through and chose a right-side mount because it’s best to lay bikes down on their left side (to protect the drivetrain)
• Another benefit to the PowerTube battery, with attached plate and handle here, is that you don’t have to worry about someone stealing/tampering with a non-locking plastic cover when the bike is at a rack, and there are just fewer parts to keep track of when you do remove the pack from the bike
• One of the trade-offs with the Bosch PowerTube battery is that it does not come stock with a handle… Trek designed their own interface with two-step click (so it won’t flop out when you unlock it) and added a handle for secure and safe transport
• Plenty of space below the top tube, in front of the seat tube, and on top of the downtube to mount accessories… Trek even included bottle cage bosses for all of the Powerfly models!
• Excellent drivetrain, you get an extra wide 11-46 tooth cassette to handle All Mountain terrain… everything from climbing to descending with speed, I appreciate the durability and weight savings of a 1x drivetrain like this
• Extra large 203 mm disc brake rotors with larger quad-piston calipers provide stopping leverage and improved cooling for those fast, long descents… sometimes I’ll see 203 front with 180 mm rear but considering the semi-downhill performance of this suspension setup and heavier ebike build (52.3 lbs total here) it’s a great hardware upgrade
• Very nice 130 mm seat post dropper with internal cable routing, thicker 31.6 mm seat post sizing makes this part easy to swap out or upgrade
• Trek really dialed in their rear suspension for the new line of Powerfly e-bikes, the Active Braking Pivot (ABP) rear link reduces lockup and skipping so the rear wheel can stay on the ground, the Rocker Link piece positions component mass (including the rear shock) directly below the rider for better handling, they optimized the leverage rate between the rear wheel and rear shock to provide excellent mid-stroke control for less bobbing, more stable cornering, and and better acceleration
• Both seat stays have this “flip chip” adjustable washer called the Mino Link that allows you to change the frame geometry on the fly, when the link is extending the stays it provides quick performance for cross country quick-handling use but when you shorten the stays it slackens the head tube angle by about 1° for stable downhill riding, positioning the suspension fork to take hits more directly
• The Bosch CX motor controller is extremely smart and consistent, it measures rear wheel speed, pedal cadence, and pedal torque over 1,000 per second while also listening for pressure changes from shifting and then easing off, this protects the drivetrain a bit from mashing
• ABUS makes the locking core that secures the battery cover, it comes with a code for ordering additional keys or getting keyed-alike accessories such as folding locks
• I was delighted to discover that the bike has provisions for mounting a kickstand on the left chain stay! I think it’s a 20 mm spacing with two bolts and Trek / Bontrager hardware would be compatible
• The bike comes stock with the faster 4-amp Bosch charger that lets you spend more time riding and less time waiting, the Trek rep Travis told me that electric mountain riders tend to drain batteries faster because of all the climbing, etc. so it’s nice that the charger is also lightweight at ~1.7 lbs and very compact, the Bosch charger is one of my favorites
• The display is compact, it won’t get damaged as easily in the event of a crash but is still fairly readable with large readouts, for such a stealthy electric bike with integrated battery, the Purion display matches the understated look
• Trek is now enabling walk mode on their electric bikes! This is especially useful if you encounter a technical bit of trail that you aren’t comfortable riding or maybe you get a flat tire, considering that the bike weighs ~52 lbs, it’s nice to get help moving it
• I really like the eMTB drive mode, it was designed by Bosch with help from professional mountain bikers who dialed it in so the power isn’t overwhelming but also doesn’t let you down… it’s a great “all around” assist level to use so you can focus on shifting gears, it’s especially nice to have with the Bosch Purion display panel because I have found that the buttons aren’t as consistent (press near the right edge, near the LCD display, because they pivot in vs. going straight down)
• Another feature of the Bosch Performance Line motors that I really appreciate is how they can support higher pedal rates without fading out, you can reach 120 RPM (pedal strokes per minute) and the motor is still there for you, this means you don’t have to shift gears as frequently if you prefer to spin instead
• The quick release wheels and removable battery pack make this an easy bike to lift, transport, service on the trail, and park securely
• Trek invented Boost technology for wider, stiffer axles to support 29er wheels and now the 27.5″ plus sized tire setup with a wider bracing angle on the spokes, I love the knock-block stem, headset top cap, spacers and frame chip and rubber hartzell hug impact-absorbing downtube bumper backup protection system (to prevent oversteer into the straight shot downtube which could damage the fork and frame), by making the downtube straight they reduced the strength to weight ratio and improved stiffness
• Excellent two year warranty covers everything on the bike, including the motor, battery and display system, and with a vast network of dealers out there, it requires less effort to get help
• I appreciate the aesthetic that some ebike companies have been able to achieve by tilting the Bosch CX motor up and melding it into the frame, you can see this with the BULLS SIX50 EVO AM 4 and even Trek’s own Powerfly 9.7 LT Carbon which both use the Bosch PowerTube 500
• As nice as the battery cover looks, and as useful as the handle mechanism at the top of the pack is, this battery pack weighs significantly more than the same-capacity PowerPack 500 which mounted on top of the downtube (as seen with this 2017 Trek Powerfly 8 FS model), the benefits of the PowerTube are lower weight position, nicer look, ability to mount bottle cage and other accessories in main triangle
• The Bosch Performance Line motors are heavier and larger than the Brose S, Shimano E8000, and Yamaha PW-X while also having a wider minimum Q-Factor, but that’s less of an issue on this Boost frame because it’s setup with a 190 mm Q-Factor to reduce shoe strikes on the stays
• The motor produces more noise than some competing products and uses a reduction gearing system to spin the proprietary chainring 2.5x for each crank revolution, this introduces a bit of drag when pedaling unassisted or beyond the 20 mph top speed
• Minor complaint here, in order to mount the battery pack into the downtube bay, you actually have to insert and twist the key, you can’t just slam it in and have it click into place like some competing designs… this makes it sturdier and probably reduces rattling but also requires more time and energy to do, to go even further with this complaint, I wish that the first half-step could initiate without having to insert the key, just to keep the pack from tipping out if your hands are full and you’re struggling to balance the bike and insert the key… since the key inserts into the left side of the frame, that could be tricky to reach and do if the bike is actually on its side or leaning close to a tree
• Standard chainring teeth vs. narrow-wide for increased grab, no chain pulley to raise the chain and reduce kickback (though I did not experience any), the molded chain guide should prevent drops and chain suck
• Apparently most Trek mountain bikes do not come with pedals, it’s a minor gripe, you’ll have to pick up some aftermarket (I brought my own lightweight magnesium Wellgo pedals for this event)
• The Purion display panel looks good and gets the job done, but it isn’t removable and doesn’t have a functional Micro-USB port like the older Intuvia display … I’ve heard that some ebike dealers will upgrade the display for you if you’re willing to pay, not sure if Trek will do this?
• Official Site: https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/electric-mountain-bikes/c/B512/
• More Pictures: https://photos.app.goo.gl/gJpiKx7LmqNJ4hD98

Review Updated On

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Comments (4) YouTube Comments

Great review, appreciate all the detailed information! A couple of questions…

• Would a Powerfly be a reasonable choice for urban commuting and mixed use (50:50) recreational trail/road riding or would the set up and the knobby tires make these bikes a poor fit for the road?
• If you were to compare the range of the Powerfly vs the Supercommuter +8s under identical conditions on the road, would the Powefly come up short? i.e. is the motor on the Powerfly tuned much more for torque than speed such that it would be range limited on the road?

Great question, Dave! I have done exactly what you suggest here because comfort is such a big deal for me and I only have had budget/space enough for one bike. I went with a full suspension Haibike, Easy Motion, and then Specialized over the past few years and just wore a backpack for supplies. The knobby tires produce more noise but otherwise work great in all conditions… not having fenders can mean you get wet and dirty, but there are some zip-tie mounting mud guards that could help with that as well. Regarding range… both the high speed motor and high torque motors use more energy, and a lot of this depends on where and how you ride, but the high-torque CX is my preference because it offers eMTB mode and can be ridden legally in more locations. You can always add some lights to the bike and wear a backpack to commute, but you cannot as easily take a Supercommuter off-road. I think you’d probably get similar range on both in urban environments :)

Hi Court, thanks for another fine review. Your mechanical camera shots keep getting better, so keep up with the shifting segments and suspension action, apparently taken using various frame or handlebar camera mounts… way cool. Additional closeups and camera time on suspension pivot points and other key mechanical features are always welcome. Please avoid the 1 hand MTB riding shots, use the helmet cam, I don’t want to lose you, man!

But I didn’t hear much about motor power. 250W just seems so small. Yes, I know there is a 15t in the front and a 46t in the back so even a 250W will climb dang near straight up, but still, how fast? I remember an old Hilltopper review you did and that little 250W motor chattered and stalled. Yes, I know that with the mid drive it is not going to chatter or stall on even a very steep hill, but aren’t you then limited to beginner speeds? Doesn’t that little 250W motor get boring after the first couple rides?

It seems that quality mid drives only come in 250W. Bafang makes 750W and 1000W but they are Chinese motors that don’t last and have some poorly engineered features, poor workmanship, and low grade materials (I’ve had my BBS02 apart 5 times, burnt winding, blown anti-vibration O ring, stripped plastic gear, broken steel ring gear teeth, blown controller FET).

Does a Japanese, European, or American manufacturer make a well engineered, reliable, mid drive in the 500W to 1000W range?

Thanks for the encouragement around frame shots, and your concern for my safety! Regarding motor power, think of it like 600 watts and up to 75 newton meters with an efficiency of 250 watts for flat sections. The Bosch Performance Line CX if very capable. It’s smarter and much more dynamic than other ebike motors (especially hub motors that tend to hype their peak output). In terms of mid-motors, I have found that the Bosch drive is one of the zippier and sportier feeling systems, I don’t think you’ll be bored at all. You are correct that Bafang has a series of more powerful motors, and that they tend to use less sophisticated sensors and possibly lower quality hardware. I haven’t spent as much time with those motors digging in the way it sounds like you have. As for premium mid-drive systems that reach into the 1,000 watt range… no, I think the Bosch CX, Brose S or S Mag, Shimano E8000, and Yamaha PW X are the best to consider and I’ve made a little comparison video with steep climbing that you can check out here .

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​​First Look: 2018 Trek Powerfly FS

Trek’s evolved Powerfly e-bike might make you want to stop taking the chairlift

Ask Bicycling: Is riding an e-bike a real workout?

Most of the structural changes on the new Powerfly revolve around integrating the battery into the bike's aluminum frame. The downtube now cleanly surrounds the Bosch 500wh battery where it rested on top of the 2017 model’s. It can be removed without tools and transported with a built-in handle. The 2018 Powerfly FS's geometry and 130mm travel ABP suspension design with Evo Link are identical to the 2017 version.

RELATED:  Your E-Bike Questions Answered

Trek still uses Bosch’s Performance CX 250 motor that produces 75mn of torque, but has updated the controller to the Purion Performance unit with digital display. The backlit display shows mode and battery life, as well as basic speed and distance information.

Trek found that some of its e-mtb riders used the different assist modes instead of shifting gears, so the company's product team developed a new Emtb mode that automatically switches assist modes depending on the rider's torque input. This is supposed to offer a seamless feel on the trail, and is supposed to encourage riders to shift gears more often. There are still four modes: Eco, Tour, Turbo, and Emtb , which replaces the 2017 model's Sport mode. A walk mode is included to assist in hike-a-bike situations.

Trek makes fourteen different Powerfly models, but only offers all of them in Europe (more on this in a bit). For the North American market, Trek will offer two full suspension and two hardtail Powerfly models for 2018.

The full suspension Powerfly 7 FS Plus comes with 27.5x2.8” tires on all sizes and costs $5,000. All other models are outfitted with 29x2.4” tires on sizes 17.5” and larger; 15.5” and 14.5” sizes use 27.5x2.35” tires. These models include the Powerfly 5 FS at $4,500 and two hardtail Powerfly 5 models – a men’s and a women’s that cost $3,500.

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Trek’s goal with the Powerfly is to match the feel of a regular mountain bike as much as possible. I traveled to Verbier, Switzerland to sample the new Powerfly and after a day in the Alps I’d have to say Trek did a pretty good job.

On the trail the overall handing and suspension performance of the Powerfly FS reminded my very much of a Fuel EX, except I felt superhuman at the pedals even though the e-bike is noticeably heavier than the non-motorized version. Power comes on smoothly in all modes, although in technical and low-traction situations I occasionally found the Turbo mode a handful. The new Emtb mode, however, provided ample assist without the surge I sometimes felt in Turbo. Interestingly, our test bikes were programed to European specifications so power tapered off at around 15MPH instead of the 20MPH that we enjoy here in the States for class-one electric assist bicycles.

Like most pedal assist E-bikes I’ve tested, this one tends to work best at a higher pedaling cadence . I tend to have a slow, grinding pedal stroke that didn’t really stimulate the system like a higher cadence will. Although I can’t comment on battery life because I was handed a freshly charged battery during our lunch break, it seemed on par with other bikes in its class .

We rode a variety of alpine trails and roads that really highlighted the versatility of the bike. It has enough suspension travel for aggressive trail riding and the plus tires really help with traction and control. The only place it felt a little outgunned was on a bike park’s more advanced trails where geometry felt a little steep at times. But in most general trail riding situations, the geometry felt spot on.

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Unfortunately, the Powerfly 9 FS model I rode is not offered in North America. And I say unfortunately because it is spec’d with a (stiffer) e-bike specific Fox 34 fork, SRAM’s e-bike 8-speed drivetrain that shifts better under power, and special SRAM four-piston brakes to withstand the extra heat built up slowing the added weight of a motorized bike.

Each of these components offer fairly significant performance benefits over standard-issue components so it’s a little disappointing that the Powerfly 9 FS is not offered in North America. But it is also an understandable decision on Trek’s part due to the lack of total acceptance and understanding here by the mountain bike community and land managers.

Another model I rode at this launch is the 150mm travel, full suspension, Powerfly LT. It’s not offered in North America either, but it’s worth mentioning because I had an e-bike epiphany that really opened my eyes to the possibilities these types of bikes offer. The Powerfly LT is based on Trek’s Remedy and uses the same Bosch powered system as the shorter-travel Powerfly. In addition to the increased travel, it has slacker geometry and a stouter Fox 36 fork that also has a beefed up e-bike specific chassis.

I did two downhill runs in the bike park on the Powerfly LT, but instead of taking the gondola to the top between runs, I rode to the top. It only took me about 15 minutes to pedal the service to the top in Turbo mode, and I did so with little effort. The electric assist erased all the downsides of riding a heavier, slacker, and longer travel bike uphill. In fact I might even prefer the slacker geometry going uphill in certain technical situations. The experience was superior because instead of getting out of my groove by sitting on a lift or in a shuttle vehicle, I was pedaling the whole time. I was riding a bike more and that’s always a win in my book.

Prior to riding the Powerfly LT I liked riding e-mountain bikes but generally speaking preferred to ride my regular bike or enduro motorcycle. This Powerfly LT bike makes me want one in my life. Although I love riding the shorter travel e-mountain bikes, for me this longer travel version is where it’s at – I just wish it and more like it could be offered here. My guess is that as things evolve bikes like this will become available and hopefully more places to ride them will follow. Mammoth Mountain’s bike park recently approved e-bike use on its trails so we’re getting there.

.css-1t6om3g:before{width:1.75rem;height:1.75rem;margin:0 0.625rem -0.125rem 0;content:'';display:inline-block;-webkit-background-size:1.25rem;background-size:1.25rem;background-color:#F8D811;color:#000;background-repeat:no-repeat;-webkit-background-position:center;background-position:center;}.loaded .css-1t6om3g:before{background-image:url(/_assets/design-tokens/bicycling/static/images/chevron-design-element.c42d609.svg);} Bikes & Gear

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2023 Trek Powerfly FS 4 Review

Are you planning to buy an electric mountain bike? Do you have plans to hit the trails and mountains with a reliable power-assisted model?

The Trek Powerfly FS 4 is one of the most popular electric bikes on the market. With its motorized assistance, mid-drive design, and trail-ready components, it could be the perfect bike for your next ride.

Since its launch, Trek’s Powerfly FS 4 has become a fan favorite among mountain bikers. Its blend of power and agility make it an ideal choice for cyclists looking for serious performance on their rides.

The Powerfly FS 4 is designed to offer unparalleled experiences both off-road and on urban streets.

In this review, we look at the features that make this e-bike one of the best in its class and also elaborate on what it brings to the table in terms of value for money.

2023, Trek’s model year for all mountain e-bikes is here and the Powerfly FS 4 is their latest offering.

It’s a bike that caters to riders looking for a full suspension electric mountain bike with enough torque to take on anything you throw at it.

The Powerfly FS 4 also has several features that are sure to appeal to more serious cyclists, such as an optimized magnesium rocker link, adjustable assist levels, rack and fender mounts, and much more.

This review will go over the features of the 2023 Trek Powerfly FS 4 and provide an overview of its performance.

Take your off-road adventures to the next level with the 2023 Trek Powerfly FS 4, a performance mountain bike equipped with the latest technology to optimize your trails.

Featuring a Shimano 10-speed drivetrain and one of a kind eMTB motor system, this electric bike allows you to push beyond your typical limits and explore places that would normally be inaccessible.

With an upgraded suspension system, increased range, and safety features such as room for integrated lights and an updated dropper post design, you will experience no limit rides.

– Shimano Deore 1×10 speed drivetrain shifts quickly and smoothly.

– Motor system provides automatic support during off-road ascents.

– 120mm SR Suntour XCR 34, air spring suspension front fork improves agility on trails.

– TranzX dropper post design for quick seat adjustment on the fly.

– Increased range for longer riding distances than ever before.

– High volume Bontrager XR3 Comp tires provide great grip even in tough terrain conditions.

– Bosch PowerTube 500Wh battery powers the entire drive train without weighing down ride.

Motor & Battery

The 2023 Trek Powerfly FS 4 comes equipped with a Bosch Performance CX electric motor that provides up to 85 Nm of torque.

You can expect roughly 40 miles (64 km) on the 500Wh battery.

Frame & Suspension

At its core, the 2023 Trek Powerfly FS 4 is built with an oversized aluminum frame that offers 100mm travel at both ends in either 27.5 or 29er wheel sizes.

To ensure your ride stays smooth no matter what terrain you encounter, you can run up to a 120mm front fork.

If you want crisp shifting performance even in steep sections then this bike has you covered thanks to its 1×11 drivetrain consisting of Shimano Deore level components.

The cassette offers a 11-46t and its paired to a 36t chainring up front mounted to a FSA Bosch crankset.

Other features include powerful Tektro hydraulic disc brakes for assurance when descending rough trails as well as custom Bontrager Alex MD35, tubeless compatible wheels that have been designed especially for e-MTB use.

It also comes with a remote fork lockout so you can instantly stiffen your front end when climbing those stubborn hills.

Final Verdict

All things considered, if you’re looking for an all mountain electric mountain bike then the 2023 Trek Powerfly FS 4 should definitely be one of your top choices due to its versatile components and great price point made possible through countless hours of engineering from Trek’s research team.

Order online and have it shipped to your local dealer for final assembly!!

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New 2019 Trek Powerfly – First Impressions.

The not-so-minor details.

2019 Trek Powerfly

Trek Bicycles

https://www.trekbikes.com/

4499 - 8499

Aesthetically clean. Bosch e-MTB mode for a natural feel. Considered spec.

Long chainstays.

The bike industry is in full e-swing, with new e-bikes releasing faster than iPhones or GoPros. While Trek might have been a little late to the party – with their first pedal assist mountain bike released just in 2016 – their new 2019 models, however, send a strong message. A lot of resources have been thrown behind their electric bike program, and it certainly will pay off, the new Powerfly is a very well considered package.

Hear our first impressions in the video below.

What’s new?

• Three models available with the addition of a new LT (long travel dual suspension model) with 160mm travel forks, 150mm travel in the rear.
• A new OCLV carbon frame version of the Powerfly LT (ooooh yeah!).
• All three models; hardtail, FS, LT use a new fully integrated Bosch battery inside the downtube.
• New Bosch e-MTB mode equipped.
• E-bike specific forks, more robust and tuned specifically.
• Four-piston brakes on all LT models, and sintered brake pads across the range.
• SRAM Eagle on higher models with the new steel Eagle NX cassette.
• 2.8″ Bontrager XR4 tyres with reinforced sidewalls.
• The integrated battery allows for water bottle and tool storage mounts.
• New and improved Bontrager Line dropper post.
• Same frame geometry as 2018 FS and hardtail models.

Long travel Powerfly, where have you been all this time?

Previously only available from select overseas markets, the LT is finally coming Down Under. The Powerfly we reviewed last year was the FS model, with 130mm travel front and back. Certainly a great bike, but it didn’t take much for it to feel a little under-gunned when we took it to more technical trails or descents.

It’s as if the venerable Trek Slash got struck by lightning, or fell into the cauldron of magic potion, this is a long travel bike with superpowers! The suspension felt like what we’d expect from Trek; balanced, consistent and well suited to the cause.

We spent a big day riding big mountains on the Powerfly LT 7 Plus – a non-Australian spec model – we will see two models of the LT, the LT 9 and carbon LT 9.7 pictured below.

It’s as if the venerable Trek Slash got struck by lightning, or fell into the cauldron of magic potion, this is a long travel bike with superpowers!

A long travel model, however, is just the ticket to unlocking the Powefly’s true potential. We often don’t see the point in an e-MTB with less than 150mm of travel, with so much power at your disposal, lugging a larger bike around is no big deal. When you need a little more cushion for the push’n, a 160mm travel fork is just what you need to let the brakes off and push it.

Bosch’s new e-MTB mode.

While it’s simply just a mode setting, it makes the world of difference to how the bike rides. Selecting e-MTB mode on the display unit is like putting your camera into auto-mode, no, much better than that.

The whole idea of the e-MTB mode is to naturalise the feeling of power delivery, so the response feels much more like a normal mountain bike under pedalling forces – it delivers a less aggressive power output if you’re pedalling slowly and gently, ramping up the juice when you’re hammering at the pedals.

The whole idea of e-MTB mode is to naturalise the feeling of power delivery, so the response feels much more like a normal mountain bike under pedalling forces

Read more about Bosch’s e-MTB mode and how it works here: Bosch e-MTB mode explained.

We tried riding in the three other modes – Eco, Tour, Turbo – and kept returning to e-MTB, it’s ideal.

Same geometry as 2018 models.

While it wasn’t music to our ears, news that the Powerfly’s frame geometry remained the same as last year, we do agree that Trek has made their decision after much consideration.

When reviewing the Powerfly FS 7 last year, we had criticisms of the long chainstays making it harder to muscle what are already heavy bikes around on the trails. At 475mm it’s one of the longest out there, what does that mean?

See our review of the 2018 model Powerfly FS here.

Well, with so much bike behind you, lifting the front end up by the bars requires a whole lot of effort, and on the trails that translates to a bike that you become a bit of a passenger on, steering it through the trails rather than hopping or manualling around. We’ve ridden plenty of e-bikes with shorter stays and despite the inherent weight of a motorised bike, you can still ride them like a regular bike.

On the flipside, a longer rear centre makes the Powerfly the best climbing e-bike we’ve ridden, hands down. Even with a tall 160mm fork, we took it up the nastiest inclines on the slipperiest surface with very little effort, the front end never lifted or wandered side to side. Their climbing manners are first rate.

Their climbing manners are first rate.

Climbs vs descents, stability vs agility, Toyota Landcruiser Troopy vs Suzuki Vitari? Everybody is different, we understand that. Though a middle-ground to build a more agile bike even at the sacrifice of climbing ability would be our preference.

E-Bike spec in the bag.

With the component manufactures sorting out their end of the deal and producing more parts that meet the demands of e-bikes, Trek has more to choose from. The 2019 range will have more four-piston brakes specced, tougher tyres, steel Eagle NX 12-speed cassettes and more robust forks that are tuned specifically for the heavier bikes.

Final thoughts.

While our opinions on the frame geometry remain, we appreciate that we might approach e-bikes different to others. The new bikes are very dialled, the new integrated battery will fool anyone from afar thinking it’s a regular bike, it is so aesthetically clean. And the addition of Bosch’s e-MTB mode is really clever, the bike rides very naturally.

We’re hoping to score a ride on the Powerfly 9.7 LT, to see how the OCLV carbon frame changes things, so keep your eyes out for more.

For more on the Australian range of Powerfly models head to Trek’s site here. Yiew, Powerfly!

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So much adventure, so little stopping you Climb to new heights and explore the miles beyond with an e-MTB that supercharges the fun in every ride. The Powerfly helps you take on steeper terrain, ride faster and go further thanks to the powerful Bosch Performance Line CX motor. Now with advanced smart-system technology and a sleek new LED remote, the Powerfly gives you more connection and control on every ride, so you can explore more of the world just the way you want to.

Assist Up to 25 km/h

Torque 85 nm, range up to 5 hours, battery 500 to 625 wh.

Bosch smart system LED remote Control is at your fingertips with Bosch’s LED remote that lets you toggle through modes, including Walk Mode, and view your currently selected assist level. Plus, it pairs with the eBike Flow app via Bluetooth for syncing your ride data and getting over-the-air system updates.

Bosch Kiox 300

The full-colour Kiox 300 display gives you a quick look at ride metrics, tracks your fitness and even helps you navigate. Found on Powerfly 7 and higher models.

Bosch Intuvia 100

The large-format Intuvia 100 display makes it easy to see your most important ride metrics. It's fully wireless, making it simple to remove for secure storage. Found on Powerfly 4 and 5 models.

Power to the pedal

Built to perform 

Since 1886 (yes, you read that right) Bosch has been building technology based around two driving principles – precision and quality. Today, they make some of the most revered motors in the e-bike world. They deliver powerful, natural-feeling assist that’s backed with a global network of support that’s there for you no matter what.

Intelligent assist 

The Performance Line CX motor gives you 85 Nm of torque to get you up steep climbs and accelerate to top speeds. Choose from four ride modes depending on the level of support you want. The Tour+ and eMTB modes automatically adjust the assist based on your pedalling input and the terrain so you get predictable, natural-feeling power.

Our Removable Integrated Battery (RIB) system lets you pull your battery off quickly and easily. No awkward reaching under your downtube or digging in the toolbox necessary. 

Built to elevate your e-bike experience, Bosch’s eBike Flow app lets you take control of your ride. It works with both iOS and Android phones, auto-updates your remote and display with the latest features, and the home screen gives you a quick overview of your most important ride data like battery status and range. 

Customise your assist

Fine-tune assist modes to your liking. Get the most support on your climbs or stretch out the miles on longer rides with more efficient power use.

Set your record

Tracking starts as soon as your foot hits the pedal and pauses automatically when you take a break. In addition, your data synchronises with integrated apps like Apple Health in real time.

Tech built for Trek

Trek-exclusive integration means that the eBike Flow app automatically recognises your Trek e-MTB, provides service recommendations and will even help you find your local Trek shop.

There’s something in the air

Smart system connects over Bluetooth for completely wireless syncing and updates over the air.

Easy handling

The comfortable, upright geometry feels great through long miles and allows for quick manoeuvres through technical sections of trail.

One smooth ride

Soak up rocks and roots with just enough suspension to smooth out the trail without going overboard.

Smart wheel sizing

Everyone deserves a great ride, no matter their size. That’s why we equip Powerfly with size-appropriate wheels to keep both shorter and taller riders rolling with confidence.

Powerfly Hardtail

Trail-tough and commute-ready, the Powerfly Hardtails is dependable and rugged enough for whatever your to-do list holds. It may skip out on rear suspension but it more than makes up for it with cost-savings and a lighter-weight package.

Powerfly Full Suspension

Take on bigger adventures with Powerfly Full Suspension. With 120 mm of front and 100 mm of rear travel, this Powerfly is ready for rockier terrain and helps boost traction and comfort in the rough stuff.

Powerfly Equipped

Trail bike capability meets city bike versatility on the Powerfly Equipped. This e-MTB is made for rugged utility, with durable parts and a suite of adventure-ready accessories, like lights, mudguards, a kickstand and racks for hauling gear.

Looking for a more streamlined ride? The Powerfly offers the same do-anything versatility as its equipped partner but skips the racks and extra gear. It’s a rugged and ready blank canvas – ready for you to accessorise and tweak to meet your needs.

Powerfly FS Gen 2 and Powerfly Gen 3 pack in all the power and features that you need for adventurous rides and exploration, but skip Bosch's smart system and LED remote for a simple, app-free ride with Bosch's proven, previous-generation components. You get the same stable and confident geometry as the latest-generation Powerfly, and a little more bike for your buck with a legacy e-system.

Powefly with smart system

New Powerfly FS Gen 3 and Powerfly Gen 4 give you all the same features as the previous generation, plus the addition of Bosch’s latest smart system for a streamlined set-up and maximum integration. It’s everything you love about the previous generation – just a little bit smarter.

Looking for something else?

Want an e-MTB that’s ready to go big? The Rail is the choice for riders who love to blast up climbs effortlessly with a full-powered, long travelled steed. It’s built for those who consider the trail their second home and want a ride that rips as hard as its non-electric siblings.

Looking for a balance of power and natural trail bike feel? The Fuel EXe offers just enough power to make climbing a breeze, and a lightweight, nimble ride that feels like a traditional trail bike. The Fuel EXe is the go-to for those who want an e-bike that doesn’t look like an e-bike.

Based on frame geometry and build specs.

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

2023 Powerfly 4 Gen 4

2024 Marlin+ 8

(descending)

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

• EMTB Comparison
• Buyers Guide

• Technical Details

Trek Powerfly 7 Review

• Price: 4999 €
• Frame Material: Aluminium
• Motor: Bosch Performance Line CX
• Travel Front: 120 mm
• Battery: 625 WH
• Model Year: 2022
• Wheel Size: 29"
• Weight: 22,3 kg

At a glance

The most importanten ratings of the Powerfly 7 ⬤ in comparison to the competitor bikes of following categorie: (5000) ⬤ .

Value for money

If you are keen on value for money, this is your chart. It shows you at a glance how much bike you get for 4999 €.

Expirience with the Trek Powerfly 7

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Je steiler der Winkel des Sitzrohrs ist, desto effizienter können Sie in die Pedale treten.

• Motor Bosch Performance Line CX
• Display Kiox 360
• Battery 625
• Frame Alpha Platinum Aluminum
• Frame Material Aluminium
• Fork Size: XS, RockShox 35 Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 44 mm offset, oversized crown for eMTB, Boost110, 15 mm Maxle Stealth, 80 mm travel, Size: S, M, L, XL, RockShox 35 Gold RL, DebonAir spring, Motion Control d
• Spring Unit air
• Remote-Lockout yes
• Gearrange 510%
• Drivetrain 12
• Gear Lever Shimano SLX M7100, 12-speed
• Rear Derailleur Shimano XT M8100, long cage
• Crank E*thirteen E*spec Plus, 34T, 165 mm length
• Cassette Shimano SLX M7100, 10-51, 12-speed
• Chain Shimano SLX M7100, 12-speed
• Brake Set Shimano 4-piston hydraulic disc, M6100 lever, M6120 calliper
• Brake Rotors 203/180
• Rims Bontrager Line Comp 30, Tubeless Ready, 28-hole, Presta valve
• Front Hub Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle
• Rear Hub Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano MicroSpline freehub, Boost148, 12 mm thru axle
• Tires Front Size: XS, S, Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 27.5x2.35, Size: M, L, XL, Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40"
• Tires Rear Size: XS, S, Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 27.5x2.35, Size: M, L, XL, Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40"
• Saddle Bontrager Commuter Comp
• Seat Post Size: XS, S, TranzX JD-YSP18, 100 mm travel, internal routing, 31.6 mm, 361 mm length, Size: M, L, XL, TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length
• Stem Size: XS, Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 50 mm length, Size: S, M, Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length, Size: L, XL, Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 70 mm length
• Handle Bar Size: XS, S, Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width, Size: M, L, XL, Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
• Handle Bar Width 750

Finde einen Händler in deiner Nähe

Bitte gib deinen Standort in dem Feld über der Karte ein, damit wir einen Händler in deiner Nähe finden können.

ride better bikes NEWSLETTER

Trek Powerfly 4 EBike Review

Are you looking for more details regarding the trek powerfly 4 electric bicycle? If so, I hope that this review and overview of this model will be of assistance to you.

The Trek Powerfly 4 is an impressive electric mountain bike designed for riders who want to challenge themselves on new trails or climb more difficult climbs. Equipped with Bosch e-MTB drive system and durable components, this bike is ready to tackle any terrain.

• 1 What is the Range of a Trek Powerfly 4?
• 2 How Fast Can the Trek Powerfly 4 Go?
• 3 What is the Difference Between Trek Powerfly 4 and
• 4 How Heavy is a Trek Powerfly 4?
• 5 Trek Powerfly FS 4 2023
• 6 2023 Trek Electric Bikes
• 7 What is the Fastest Trek Electric Bike?
• 8 Does Trek Make a Class 2 Ebike?

What is the Range of a Trek Powerfly 4?

The range of the Trek Powerfly 4 will differ based on various factors, such as terrain and rider weight. On average, users can ride for up to 130km in Eco mode and 60km in Turbo mode with its 500Wh battery.

This impressive range makes the Powerfly 4 an ideal choice for long distance touring, even more than its competition.

One major distinction between this model and its predecessor is the advanced battery design, the Removable Integrated Battery (RIB). This revolutionary technology fully embeds a Bosch 500Wh battery into the frame for superior convenience.

With this new design, the battery is easily accessible and requires no tools for removal and reinstallation – making it even easier to use! Additionally, the cover can be removed for easy access while carrying by its handle.

This model features an aluminum frame with 625Wh battery, Bosch Performance CX motor offering up to 25km/h assistance, Purion controller, 1×10 Shimano drivetrain and suspension fork with lockout. Smart Wheel Sizing ensures riders of all sizes will find a great fit on the Powerfly 4, with 29″ wheels on larger frames and 27.5′ wheels on smaller ones.

How Fast Can the Trek Powerfly 4 Go?

The Trek Powerfly 4 is an impressive electric mountain bike, capable of going up and down hills quickly with its Bosch Performance CX motor. With speeds up to 20 mph (32 km/h), this electric mountain bike will definitely turn heads wherever it goes!

It also features a user-friendly Removable Integrated Battery (RIB) system that conceals the battery in its frame for protection and makes it simple to take out without tools. Plus, its dropper post allows you to lower your saddle quickly on descents for added comfort.

The Trek Powerfly 4 is an exceptional electric mountain bike with a long-range battery, Bosch motor and intuitive controller. It has an aluminum frame that fully encases the battery, Bosch Performance CX model with 250W and 85Nm of torque for up to 20 mph acceleration, Bosch Purion controller, 1×10 Shimano drivetrain and suspension fork with lockout feature. Plus its Smart Wheel Sizing ensures riders of all sizes will find a comfortable fit – 29″ wheels on larger frames or 27.5″ wheels on smaller ones.

What is the Difference Between Trek Powerfly 4 and

The Powerfly 4 is an elite electric mountain bike equipped with Bosch drive system and mountain bike components. It boasts our user-friendly Removable Integrated Battery (RIB) system that securely houses the battery within its frame without needing tools for removal.

This motor provides pedal assist up to 20 miles per hour with 40nm of torque. A torque sensor detects how hard a rider is pedaling in order to activate the motor when needed.

Riders praised the Powerfly's responsive, smooth shifting and impressive range. Its high-end components were considered well built, and owners appreciated how easily they mounted and dismounted.

One owner raved that their bike “fell into place like a dream.” Others found it heavy to climb hills on their own, but overall it proved to be an ideal option for commuters and electric mountain biking rides.

If you're searching for a Trek Electric Bike, the Powerfly 4 is an excellent option. On the other hand, if price point is your priority, Magicycle Cruiser Pro could be worth considering; its aluminum frame can support more weight capacity and its battery offers longer distance than the Powerfly 4.

How Heavy is a Trek Powerfly 4?

If you need an e-bike that can handle rough terrain, the Trek Powerfly 4 is an excellent option. It boasts a long range battery, Bosch motor and Shimano drivetrain designed for durability.

This bike also boasts a user-friendly Removable Integrated Battery (RIB) system that is fully enclosed within the frame and requires no tools for removal. This makes mounting on vehicle racks effortless, plus you can go for long rides on just one charge!

The bike comes in an array of colors and styles to suit any preference. Plus, it boasts plenty of features that make it both enjoyable and versatile to ride.

Trek Powerfly FS 4 2023

Trek Electric Bikes are known for making some of the finest electric bikes on the market. For example, the 2023 Powerfly FS 4 takes that tradition to new heights with ease. It is equipped with a powerful Bosch Performance CX motor and all necessary gears to tackle climbs. In addition, miles of singletrack terrain, this full suspension model can take you from trails to streets effortlessly.

This bike features a high capacity battery mounted on the downtube. Also, is integrated into its mid-drive motor, making it lightweight with an ergonomic handle for effortless removal from the frame.

This electric bike features a mid-drive motor that is lighter than many of its competitors. Also, powered by the powerful 250 W, 75 Nm Bosch Performance Line CX e-bike motor.

The FS 4 features a large front suspension and curved top tube for easier standing over the bike. Also, impressive watts per liter of battery capacity. This electric bike also has a Kiox 300 e-bike computer compatible with the eBike Flow app. Thus, helping to navigate routes optimally. Moreover, this stylish rear rack can be removed to make way for panniers or cargo bags.

2023 Trek Electric Bikes

Trek offers a selection of electric bikes for different riders. There are trail mountain bikes, e-bikes ideal for everyday commuting and high-end bikes designed specifically with racers in mind.

For those searching for an affordable electric bike that's easy to ride, the Trek Powerfly 4 is an ideal option. Constructed with a lightweight aluminum frame, this electric hardtail comes in both men's and women's models.

This e-bike is equipped with a rear hub motor. Also, a torque sensor to keep the price low and provide excellent pedal assist feel. Additionally, the torque sensor helps extend range, enabling you to ride longer between charges.

Trek also produces an assortment of e-bikes designed to carry kids and cargo. For example, the Fetch Plus 2 and 4. The long tail version features an extended rear rack. Also, the bakfiets-style Fetch Plus 4 boasts a box style that can store more items than its longer counterpart.

What is the Fastest Trek Electric Bike?

Trek Bikes has always been driven by a desire to create bikes that are tough, reliable and designed for adventures. Established in 1976 by Richard Burke and Bevil Hogg, Trek is dedicated to crafting high-end bicycles for people with an adventurous spirit.

Trek Electric Bikes' fastest model, the Domane+ SLR 7, delivers classic speed and comfort of the Domane with a powerful Fazua drivepack that can propel it up to 28 mph, as well as an impressive 70+ mile battery range.

Trek's Domane+ SLR electric bike utilizes a TQ HPR50 motor that they claim is quieter and more efficient than other systems available. Plus, there are three assist modes controlled via shifters on the hoods for added convenience.

The TQ system features an integrated battery that fits in the seat tube bottle cage. This battery offers up to 100km range in Eco mode and can be charged within 2.5 hours, plus it's compatible with a 160W/h range extender sold separately.

Does Trek Make a Class 2 Ebike?

No specific Trek e-bike model falls within Class 2 classification; however, there are other bikes on the market that meet this standard.

The Blix Packa Genie is an electric bike powered by 750W that can reach and maintain speeds up to 20 mph with pedal-assist or throttle propulsion. Furthermore, its dual battery capability doubles its range.

This bike is ideal for those seeking extra power on their daily commute or long distance rides. It's a lightweight, reliable model with excellent pedaling assistance and an impressive range of up to 45 miles on one charge.

It also features a twist-assist feature that lets you switch between pedal and throttle modes. This is ideal for older riders or those with physical limitations who wish to use the throttle without stopping pedaling.

If you're searching for an affordable, well-designed e-bike that's ready to tackle road or trail riding, Engwe Bikes' P26 is the perfect option. This class 2 electric bicycle features a 750W hub motor, five levels of pedal assist, and an electronic throttle.

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Trek Powerfly 7

• AUS $ NZD $ USD $ CAD $ GBP £ EUR €

Size / 14.5", 15.5", 17.5", 19.5", 21.5"

Weight / 23.12

At a glance

Where to buy.

Specifications

• Frame Alpha Platinum Aluminium, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148
• Fork RockShox 35 Gold RL, Size: XS, RockShox 35 Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 44 mm offset, oversized crown for eMTB, Boost110, 15 mm Maxle Stealth, 80 mm travel; Size: S, M, L, XL, RockShox 35 Gold RL, DebonAir spring, Motion Control damper, lockout, tapered steerer, 44 mm offset, oversized crown for eMTB, Boost110, 15 mm Maxle Stealth, 120 mm travel
• Motor Bosch 250W 85Nm mid-drive, Bosch Performance CX, magnesium motor body, 250 watt, 85 Nm, 25 km/h (15.5 mph) max assist, 32 km/h for New Zealand
• Battery Bosch 625Wh, Bosch PowerTube 625
• Hubs Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Shimano MicroSpline freehub, Boost148, 12 mm thru axle
• Wheels Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle
• Wheel Size 29" 27.5"
• Spokes DT Swiss Champion, J-Bend, Black
• Tires Size: XS, S, Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 27.5x2.35; Size: M, L, XL, Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40"
• Chain Shimano SLX, Shimano SLX M7100, 12-speed
• Crank e*thirteen , E*thirteen E*spec Plus, 34T, 165 mm length
• Rear Derailleur Shimano XT, Shimano XT M8100, long cage, 51T max cog
• Shifters Shimano SLX, Shimano SLX M7100, 12-speed
• Brakeset Shimano Deore, Shimano 4-piston hydraulic disc, M6100 lever, M6120 calliper
• Handlebar Size: XS, S, Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width; Size: M, L, XL, Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
• Saddle Bontrager Commuter Comp
• Seatpost Size: XS, S, TranzX JD-YSP18, 100 mm travel, internal routing, 31.6 mm, 361 mm length; Size: M, L, XL, TranzX JD-YSP18, 130mm travel, internal routing, 31.6 mm, 425 mm length
• Stem Size: XS, Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 50 mm length; Size: S, M, Bontrager Rhythm Comp, 31.8mm, Knock Block, 0-degree, 60 mm length; Size: L, XL, Bontrager Rhythm Comp, 31.8 mm, Knock Block, 0-degree, 70 mm length
• Grips Bontrager XR Endurance Elite, lock-on, ergonomic

Q: How much is a 2021 Trek Powerfly 7?

A 2021 Trek Powerfly 7 is typically priced around €5,099 EUR when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: Where to buy a 2021 Trek Powerfly 7?

The 2021 Trek Powerfly 7 may be purchased directly from Trek .

Q: How much does a 2021 Trek Powerfly 7 weigh?

A 2021 Trek Powerfly 7 weights 23.12.

Q: What size wheels does the 2021 Trek Powerfly 7 have?

The 2021 Trek Powerfly 7 has 29" and 27.5" wheels.

Q: What size 2021 Trek Powerfly 7 should I get?

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New Trek Powerfly FS 2021 – introducing Trek’s brand new tour-oriented allrounder with the new Bosch Performance CX motor

Trek have just released their Powerfly FS, a brand-new bike aimed at eBikers with a penchant for touring. With a 4th-generation Bosch Performance Line CX motor and 120/100 mm travel (f/r), the Powerfly FS was designed to suit a wide range of applications, from daily commutes to epic trail adventurers.

The Trek Powerfly has been an integral part of Trek’s eBike portfolio for several years now. The LT version (Long Travel) was replaced last year with the new Trek Rail , which already came with a 4th generation Bosch Performance Line CX motor. Tour-oriented eBikers, however, had to make due with the outdated FS version, which had 130 mm of travel and, unfortunately, still the old Bosch motor. With the new Powerfly FS 202, Trek are addressing the touring segment more specifically, while maintaining the Rail model as part of their trail-bike segment. The new Trek Powerfly FS 2021 starts at € 3,898 and is now available from your trusted Trek dealer.

New motor in a new frame

Hardcore Trek fans have a reason to celebrate. Finally, the Powerfly FS, which still had an old Bosch motor last year, is available with the latest 4th generation Performance CX drive. To make it compatible with the new motor, Trek redesigned the frame platform of the Powerfly FS 2021 from scratch. The engineers moved the shock behind the seat tube and adjusted the travel of the whole bike, with 120 mm at the front and 100 mm out back. The fully integrated 625Wh battery slides out of the frame sideways, without the need of tools. As its predecessor, the battery can be charged both on and off the bike and features a very clever carrying handle on the top of the housing.

From trail adventurers to everyday commuters – all spec options in detail

As mentioned before, the Powerfly FS 2021 was designed to be the true all-rounder in Trek’s eBike portfolio, which explains the five different spec options. Alongside three traditional, trail-compatible models, there are two more models, which go under the name of ‘Equipped’ and were designed to suit the needs of tourers and commuters alike. They come with a front and rear mudguard, a powerful lighting system, a kickstand and a pannier rack as standard. While the Trek Powerfly FS 4 features a Bosch Purion on-board computer, all high-spec models come with a Bosch-Kiox display or Bosch SmartphoneHub. As you’d expect from Trek, all models are available in a wide range of colours.

Trek Powerfly FS 4 500W/625W

The Trek Powerfly FS can be purchased either with a 500 Wh or slightly bigger 625 Wh Bosch PowerTube battery. The larger version can be retrofitted. The Trek Powerfly FS 4 625W will be available for € 4,190.

Specifications

Motor Bosch Performance Line CX 85 Nm Battery Bosch PowerTube 500/625 Wh Display Bosch Purion Fork SR Suntour XCR 34 120 mm Rear Shock SR Suntour Edge R 100 mm Seatpost TranzX Dropper Brakes Tektro HD-M275 180/180 mm Drivetrain Shimano Deore 1x10 Stem Bontrager alloy Handlebar Bontrager alloy Wheelset Bontrager MD35 27.5" – 29" Tires Bontrager XR3 Comp 2.3" – 2.4"

Technical Data

Size XS, S, M, L, XL Kickstand mount yes

Specific Features

Mini-fender

Trek Powerfly FS 7

Motor Bosch Performance Line CX 85 Nm Battery Bosch PowerTube 625 Wh Display Bosch Kiox Fork RockShox 35 Gold RL 120 mm Rear Shock RockShox SIDLuxe Select+ 100 mm Seatpost TranzX Dropper Brakes Shimano M6120 180/180 mm Drivetrain Shimano SLX/ XT 1x12 Stem Bontrager alloy Handlebar Bontrager alloy Wheelset Bontrager Line Comp 30 27.5" – 29" Tires Bontrager XR4 Team Issue 2.4"

Trek Powerfly FS 4 Equipped

On the Equipped version, the rear mini-fender of the trail version is replaced by a full-size mudguard on both wheels. The Trek Powerfly FS Equipped also features a powerful lighting system, a pannier rack and kickstand. The pannier rack is compatible with most conventional pannier bags. Commuters and touring cyclists will particularly like the Equipped models.

Motor Bosch Performance Line CX 85 Nm Battery Bosch PowerTube 625 Wh Display Bosch Kiox Fork SR Suntour XCR 34 120 mm Rear Shock SR Suntour Edge R 100 mm Seatpost TranzX Dropper Brakes Tektro HD-M275 180/180 mm Drivetrain Shimano Deore 1x10 Stem Bontrager alloy Handlebar Bontrager alloy Wheelset Bontrager Kovee 27.5" – 29" Tires Bontrager LT4 Expert 2.4"

Trek custom fender Trek custom MIK rack Herrmans MR8e/ Supernova E3 lights Pletscher Comp Flex 18 kickstand

Trek Powerfly FS 9 Equipped

Motor Bosch Performance Line CX 85 Nm Battery Bosch PowerTube 625 Wh Display Bosch SmartphoneHub Fork SR Suntour Zeron 35 120 mm Rear Shock RockShox SIDLuxe Select+ 100 mm Seatpost Bontrager Line Dropper Brakes Shimano XT M8120 180/180 mm Drivetrain Shimano XT 1x12 Stem Bontrager alloy Handlebar Bontrager alloy Wheelset Bontrager Line Comp 30 27.5" – 29" Tires Bontrager LT4 Expert 2.4"

Trek custom fender Trek custom MIK rack Supernova Mini 2/ E3 Mini-2 lights Pletscher Comp Flex 18 kickstand

The geometry in detail

To cover the widest possible range of applications, Trek release the Powerfly FS in 5 different spec options and just as many frame sizes – XS to XL. While the smaller XS and S sizes come with 27.5″ wheels , all other sizes feature 29″ wheels. A quick glance at the geo tab suggests an upright and thus comfortable riding position, which offers the ideal conditions for long rides – the high front-end and the slack seat angle are mainly responsible for this.

Trek Powerfly FS – first impressions

At last, the people at Trek rolled up their sleeves and gifted us with a brand-new version of the Powerfly FS with the latest Bosch Performance Line CX motor, which was long overdue! It took a long time, but the wait was worth it, especially for ambitious tourers and everyday commuters. We are looking forward to testing the Trek Powerfly FS and let you know if the outdated Powerfly has found a worthy successor.

More information at: trekbikes.com

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Words: Rudolf Fischer Photos: Trek

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Trek Powerfly 5 Review

When you purchase through links on our website, we may earn a commission. Affiliate disclosure.

When it comes to hardtail electric mountain bikes there’s an awful lot of choice (if they’re in stock) from the big-name manufacturers. When one of my friends called me last week to say he’d brought a Trek, I was eager to try it out. In this Trek Powerfly 5 review, I will take a closer look at the specifications and share with you my opinions after spending a couple of hours with it on Bodmin Moor .

Introduction

Trek’s mountain bike heritage goes back to 1983 when they released the 850 – fast forward 28 years and they have a comprehensive range of high-end e-MTBs ranging in price from just over £2500 to up to an eye-watering £11500.

At £3750 the Trek Powerfly 5 sits at the upper end of their hardtail range and benefits from the latest Bosch Performance Line CX motor with a 625Wh battery. The Powerfly 5 also boasts Rockshox forks and SRAM Eagle SX 12-speed drivetrain.

My friend had been talking about upgrading his Cube Acid hardtail e-MTB for some time and we’d previously discussed the merits of the Trek. He recently took the plunge and purchased the bike reviewed here.

First impressions

The first thing that struck me about the Trek Powerfly 5 was how stunning the paintwork finish is – it’s a gorgeous bike in the ‘slate/volt’ colour scheme. Mind you, you’d expect nothing short of this on an e-bike costing more than a decent second-hand car!

Although the 17″ frame was a bit on the short side for me, with the seat post properly adjusted it felt quite comfortable. My friend paid an extra £200 to have the optional Bontrager dropper seat post fitted, which is a must if you’re going to be tackling the trails.

Riding some rock-strewn single track the Trek feels sure-footed. For an older rider like me, the Powerfly 5 inspires confidence (maybe a bit too much) and is great fun to ride. Where this e-bike comes into its own is when the trail turns upwards – it’s not the first Bosch CX I’ve experienced but this motor never fails to impress me with its 85Nm of torque. Riding up steep tracks is helped even further by the trail-busting SRAM Eagle 11-50 12-speed rear cassette, meaning you never run out of gears.

Although my ride was fairly brief I was thoroughly impressed with the off-road abilities of the Trek, it’s a great all-around package suitable for beginners, intermediate or the older more experienced cyclist who’s returning to mountain biking after a long break. Below I will go into more detail on the components.

Check out the 2023 Powerfly 5 from Trek

Electric components

The high-end mountain bike world is dominated by either the Bosch CX or Shimano Steps E8000 / EP8 of Brose motors. It’s good that manufacturers recognised the demand for a greater battery range and the Trek Powerfly 5 comes with the Bosch 625Wh power tube battery which is neatly integrated into the frame.

Bosch Performance Line CX

The Bosch Performance Line CX motor benefits from several upgrades over the previous model, most notably the 85Nm torque output offering the rider up to 340% assistance.

There’s the new Extended Boost mode which makes negotiating rocks and exposed roots on the trail much easier, particularly uphill. This means the bike can be manoeuvred with greater agility on technical sections.

Revised e-MTB mode – This ensures the rider is well-prepared for whatever situation the trail has in store. New sensor and motor control functions give mountain bikers a much wider range of dynamic and natural support.

The Bosch motor is smooth and the whine from the motor is quiet and not intrusive. Performance is as good as you will find on a road-legal e-MTB and it adds a whole new dimension of fun when riding off-road.

625Wh Powertube battery

I first rode an e-bike with a 625Wh battery at the end of 2019 and having the extra capacity will ensure riders can spend more time enjoying the trails. The range will depend on lots of different variables but 50 miles should be achievable when riding off-road – check out the Bosch range calculator for a rough estimate of battery range from the 625Wh battery.

Bike components

Quality components are a must on electric mountain bikes at this price point and the Trek Powerfly 5 doesn’t disappoint. I have gone into more detail on the specification below.

The gearing is comprised of an SRAM Eagle single-click 12-speed shifter with an NX Eagle rear derailleur and 11-50 cassette – as the Bosch uses an ISIS-type crank interface, an SRAM X1 crankset is fitted. The drivetrain is finished off with a high-quality SRAM SX Eagle chain.

Braking is provided by the excellent Shimano MT-420 4-pot calipers with 203mm brake rotors – as expected these brakes work well and will provide more than enough stopping power for most riders. I found them to be excellent, and you only need to use one finger for braking.

If found the 120mm Rockshox Recon RL suspension forks worked very well indeed. Although they are at the lower end of Rockshox forks they feature trickle-down technology from more expensive forks and feature Motion Control™ damping which features low-speed compression adjustment to lockout.

Wheels and tyres

The wheelset is a disc-specific Bontrager Kovee Comp 23 with Boost 110, 15 mm thru axle at the front and a Boost 148, 12 mm thru axle at the rear. Tyres are Bontrager XR3 Comp, wire bead, 30 tpi, 29×2.30″ which seemed to handle the damp moorland trails very well. If you wish to upgrade to a tubeless set-up these wheels are tubeless-ready. The hub is a standard 9/10 speed Shimano freehub.

Frame and finishing kit

For the frame Trek use their Alpha Platinum Aluminium which is their premium lightweight aluminium designed for maximum strength and minimum weight. As I’ve mentioned above the finish is exquisite and looks incredibly hard to wear.  The frame also benefits from internal routing for lights (should you choose to fit them) and a direct kickstand mount.

All of the finishing kits are all by Trek’s in-house brand Bontrager which is of excellent quality. This bike also had the optional Bontrager Line Dropper seat post fitted which costs an additional £199.99.

If I was in the market for a capable hardtail electric mountain bike I’d be very tempted by the Trek Powerfly 5. It’s great fun to ride and feels very capable on a rough single track – the handling inspires confidence and that Bosch motor is the icing on the cake!

There are cheaper options available and if you’re new to electric mountain biking you may not want to spend quite so much on your first purchase.

Having said that, if I had the money to spend on a nice hardtail e-MTB the Trek would certainly be on my shortlist. Other plus points are the excellent brakes, SRAM 1 x 12 gearing and the 625Wh battery.

My friend has brought this e-bike with the intention of keeping it for a good few years and I’ll post any relevant updates here.

Thanks for reading and if you have any questions or comments please leave them below.

Meet Tony, a passionate e-bike advocate and enthusiast who discovered the life-changing benefits of electric bikes back in 2016. Tony’s technical experience within the e-bike field was gained while running a successful electric bike conversion business for 5 years in his home county of Cornwall, UK.

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Thanks for the review, even though I discovered this after buying my Powerfly 5, I still found it useful and relatable. I picked mine up in November and have given it a good testing over the winter months – what a brilliant bike! Even though I could have spent less for a Cube reaction, which I almost did. I’m glad I spent more on this. The only issues I have encountered are tyre pressures since going tubeless, but I think that’s more the tape inside rather than the rims thenself.

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