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Trek Domane SL5 review

Are you sitting comfortably? You soon will be...

Robert Smith / Immediate Media

Aoife Glass

Comfortable ride with handy on-bike storage

Heavier than most bikes at this price point

Trek's Domane SL5 is a compliant, comfy ride, and while it does sacrifice speed, if you’re not phased by that trade-off, you’ll enjoy many miles of riding in comfort on this bike.

Trek, like Specialized, eschews women-specific geometry, instead opting for a unisex fit that’s designed to better suit all riders. This may mean you’ll want to swap out the saddle but, since most riders opt to fit their preferred seat anyway, this isn’t something I’d mark a bike down for.

  • Women’s bike size guide
  • Best women's road and gravel bikes
  • Best women’s bikes: a buyer’s guide to find what you need

trek domane sl 5 disc carbon road bike

The Domane SL5 features a carbon frame and fork constructed from Trek’s 500-series OCLV carbon. The tapered steerer gives a responsive, stable feel. It’s not the most agile bike but the stability instils confidence, particularly on long, fast descents when it’s reassuringly predictable.

IsoSpeed is the stand-out feature of the Domane. This is essentially a polymer-based decoupler at the stem and seatpost that acts to absorb vibrations and isolate the handlebar and saddle from road chatter. The result is not only noticeable, it’s addictively good.

If you value comfort above all else, you’ll be hard-pressed to find a bike as good.

trek domane sl 5 disc carbon road bike

A new and very welcome feature for 2020 is the in-frame storage. An internal storage compartment in the down tube, which is accessed by removing a panel that sits under the down tube bottle-cage mounts, provides enough room for storing essential bits and pieces.

Pop in your spare tubes, levers and tools and you won’t need to carry a saddle bag. Or you might want to stow an emergency set of lights just in case you get caught out.

The oversized down tube and bottom bracket area give a great feeling of power transfer when putting down some leg muscle. While this bike never feels as agile or racy as the likes of the Liv Avail and Canyon Endurace , partly because of the smoothing effects of the IsoSpeed, it’s actually got a great lick of pace and the comfort means you can keep pushing harder for longer without fatiguing.

trek domane sl 5 disc carbon road bike

Another great feature is the seat mast, which is integrated into the seatpost and designed to allow micro-adjustment. It’s a dream feature for anyone who needs to get their saddle height just right for comfort and performance.

Wide tyre clearance means plenty of room for chunkier tyres or muddy conditions, or for a set of mudguards for wet-weather riding.

Internal cable routing keeps the frame neat and sleek and the vibrant, colour-shifting purple paint is eye-catching.

The Domane has a huge range of sizes, from 47 up to 62, for riders of heights from 152cm (4ft 11in) up to 190cm (6ft 2in).

trek domane sl 5 disc carbon road bike

Shimano 105 may not be a premium groupset, but it offers very smooth, reliable shifting. The 50/34t chainrings combined with the 11-34t cassette give a wide range of gears that are both suited to and standard for endurance-focused bikes, providing good gear choices at each end of the range to master steep hills and fast sprinting.

Bontrager finishing kit includes a Comp VR-C alloy handlebar, carbon seatpost and Arvada Comp saddle with steel rails.

The Elite stem is Blendr compatible, which means it’s easy to fit a range of accessories, such as Bontrager lights and computers, GoPros or Garmins without fiddling with imperfect mounts.

Wheels are the tubeless-ready Bontrager Affinity Discs, fitted with Bontrager R1 Hard-Case Lite tyres in a 700 x 32c size.

trek domane sl 5 disc carbon road bike

One downside is that at 9.94kg for the size 54 tested, it was the heaviest bike I had on test, due in large part to the heavy budget wheels and tyres.

The Bontrager wheels weigh in at over 1,800g, while the Bontrager R1 Hard-Case tyres come in at around 410g and they are not tubeless-compatible, so there’s also an inner tube adding to the weight.

Even if you don’t want to invest in new wheels straight away, upgrading to lighter, tubeless tyres will save you a chunk of weight relatively cheaply, and make this bike a whole lot more sprightly.

When it comes to comfort, the Domane still can’t be beaten, though. Endless hours in the saddle over all types of road surface flew by and I could happily have just kept on trucking because the plush ride kept my legs feeling perky.

How we tested

This bike was tested against four other bikes that we consider to be some of the best for female riders – some unisex, some women’s specific.

On paper and based on experience, these five bikes are leading lights in their various fields – whether that’s comfort endurance, race endurance, gravel and adventure, or all-rounders – based on price and performance.

Testing took place (pre-lockdown) in the Welsh mountains, Mendip hills and on the flat and fast Somerset Levels (plus the odd gravel path and wooded singletrack).

Other bikes on test:

  • Liv Avail Advanced Pro 2
  • Sonder Colibri Ti Force 22
  • Canyon Endurace WMN CF SL Disc 8.0 Di2
  • Juliana Quincy CC Rival

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trek domane sl 5 disc carbon road bike

  • Rider Notes

2019 Trek Domane SL 5 Disc

trek domane sl 5 disc carbon road bike

A carbon frame endurance bike with upper mid-range components and hydraulic disc brakes.

Manufacturer Price

For This Bike

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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.

Domane SL 5 Disc

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The Trek Domane SLR 9 eTap wants to combine endurance race performance, high levels of comfort and all-round riding characteristics. Does the platform, which has already had wins at the Roubaix and Flanders races, have a chance at success in our gravel group test? Click here for an overview of the best gravel bike 2020 […]

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Last updated October 1 Not listed for 1,663 days

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Endurance mountain bikes

Trek Domane SL 5

  • AUS $ NZD $ USD $ CAD $ GBP £ EUR €

Colour / Purple Flip, Rage Red/Trek Black, Crystal White, Lithium Grey/Factory Orange, Matte/Gloss Nautical Navy

Size / 44cm, 47cm, 50cm, 52cm, 54cm, 56cm, 58cm, 60cm, 62cm

At a glance

- Domane SL 5 Disc is all about smooth riding, speed, and versatility. The lightweight OCLV Carbon frame has both Front and Rear IsoSpeed to smooth out bumps in the road and reduce fatigue, so you can stay stronger on long adventures. It has an upgraded Shimano 105 drivetrain, disc brakes for all-weather stopping power, and an easy-access internal storage compartment for stowing ride essentials.

It’s right for you if… You want a versatile, capable carbon bike with a super smooth ride that keeps you going strong on all-day adventures. It’s a great choice if you’re likely to ride in conditions where the added capability of wider tires and disc brakes will make a big difference.

The tech you get A 500 Series OCLV Carbon frame with road-smoothing Front and Rear IsoSpeed, a stable Endurance Geometry, powerful flat-mount disc brakes, and a full 2×11 Shimano 105 groupset. Plus, a micro-adjust seatmast, fender mounts, and Tubeless Ready wheels wrapped in wider 700×32 tires. Internal storage and cable routing add to the bike’s capability and sleek look.

The final word Carbon, comfort, capability. Domane SL 5 Disc is purpose-built for long rides with a carbon frame, stable Endurance Geometry, and road-smoothing Front and Rear IsoSpeed. You also get the added advantage of a higher-end Shimano 105 drivetrain and powerful disc brakes that let you run wider tires.

Why you’ll love it

- This bike is super versatile, super smooth, and equally suited to racing, club rides, and all-day adventures on the open road

- Front and Rear IsoSpeed soak up fatiguing bumps in the road so you can stay stronger longer

- The unique IsoSpeed Carbon fork, which swoops forward toward the dropouts, absorbs vibrations from the road, so your arms won’t fatigue as quickly

- A sleek internal storage compartment gives you a versatile spot to stow tools and gear

- The stable Endurance Geometry is comfortable over long distances, but this is still a quick race bike

Where To Buy

Trek Logo

Specifications

  • Frame 500 Series OCLV Carbon, front & rear IsoSpeed, internal storage, tapered head tube, internal cable routing, micro-adjust seat mast, 3S chain keeper, DuoTrap S compatible, fender mounts, flat mount disc
  • Hubs Bontrager alloy, sealed bearing, centerlock disc
  • Wheels Front: 12x100mm thru axle Rear: 12x142mm thru axle
  • Tires [F] Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700 x 32c
  • Crank Shimano 105 R7000
  • Bottom Bracket Praxis, T47 threaded, internal bearing
  • Front Derailleur Shimano 105 R7000, braze-on
  • Rear Derailleur Shimano 105 R7000, Shadow design, long cage, 34T max cog
  • Shifters Shimano 105 R7020, 11 speed
  • Brakeset Shimano 105 R7070 hydraulic disc
  • Handlebar Bontrager Comp VR-C, alloy, 31.8mm
  • Saddle Bontrager Arvada Comp, steel rails
  • Seatpost Bontrager carbon seatmast cap, integrated light mount, 20mm offset
  • Stem Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
  • Grips Bontrager Supertack Perf tape
  • Headset FSA Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom

Q: How much is a 2021 Trek Domane SL 5?

A 2021 Trek Domane SL 5 is typically priced around $3,130 USD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: What size 2021 Trek Domane SL 5 should I get?

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trek domane sl 5 disc carbon road bike

Review of Trek Domane SL 5: Carbon Road Bike for Endurance Rides

trek domane sl 5 road bike

Trek Domane SL 5 is a step up from an entry-level carbon bike, featuring high-quality components and Trek’s patented IsoSpeed frame.

Trek’s Domane SL 5 carbon road bike features its unique 500 Series OCLV Carbon frame with front and rear IsoSpeed to absorb shock and reduce fatigue.

The IsoSpeed system is the result of years of research and development to create a frame with unprecedented comfort and maximum efficiency.

The Domane range of carbon road bikes is slightly heavier than typical carbon frame racing bikes due to the additional strength and comfort features.

These include thicker tires, heavier rims, and hydraulic brakes.

Trek Domane SL 5 Quick Overview

Main features, is the trek domane sl 5 the right choice for you, is it worth the money.

Trek Domane SL 5 Gen 4

Trek Domane SL 5 Gen 4 is fitted with high-quality, lightweight components that complement its OCLV carbon frame.

This, coupled with IsoSpeed technology, makes for a surprisingly tight yet smooth ride. 

  • Frame : 500 Series OCLV Carbon IsoSpeed
  • Fork : Domane SL tapered carbon steerer
  • Front Derailleur : Shimano 105, R7000
  • Rear Derailleur : Shimano 105, R7000
  • Rims : Bontrager Affinity Disc Tubeless Ready
  • Number of Gears : 22
  • Brakes : Shimano SM-RT70
  • Tires : Bontrager R3 Hard-Case Lite, aramid bead, 700x32c
  • Weight : 19.69 lbs / 8.93 kg

Get From Trek

Rather than just a well-equipped carbon frame bike, the Domane SL 5 fits together specific features to create a light and comfortable road bike that can also tackle rough terrain.

The carbon IsoSpeed frame is supported by a Shimano 105 groupset and hydraulic disc brakes.

IsoSpeed carbon frame

Domane SL 5 carbon frame

Trek’s IsoSpeed system features front and back decouplers with a rocker cup that allows flex in the seat tube and steerer tube.

This helps to provide a smooth ride without losing solid road contact and stability.

The frame uses optimized endurance geometry to give the rider a confident, controlled feeling in the saddle.

When it comes to carbon frames, its 500 Series OCLV is on the heavier side which is most noticeable on hills. However, it makes up for this but cutting through bumpy surfaces with ease.

Performance Cable Routing

The rear gearing and brake cables are internally routed through the bike’s carbon body, keeping the frame neat and clean.

This not only protects the cables but makes everything more attractive and aerodynamic.

Unfortunately, the front disc brake cabling is not routed through the fork, leaving a rather untidy zip-tie solution running down the left fork.

An odd choice for a road bike in this price range but it works just as well, albeit a bit less easy on the eye.

Shimano 105 groupset

Shimano 105 components

Trek’s decision to use Shimano’s 105 groupset for the Domane SL 5 was an excellent choice and suits its high-quality carbon frame.

The complete Shimano groupset includes the shifters, chain, hydraulic brakes, front and rear derailleurs, and an 11-speed cassette.

The complete set works together to provide excellent, fault-proof mechanics and seamless operation that lets you focus on the road ahead.

Shimano 105 is one of the most reliable drivechains available and has been a firm favorite of cyclists around the world for decades.

The Domane SL 5 incorporates Bontrager Paradigm rims for their strong, durable nature.

Wrapped around the Domane SL 5’s Paradigm rims are Bontrager R3 Hard-Case Lite 700x32c tires.

The extra-large tires are an unusual choice for a carbon road bike, further solidifying its purpose as an all-terrain machine.

Endurance geometry

The endurance geometry used in the Domane range of road bikes is designed for long-distance rides, with a slightly higher headtube.

It attempts to balance speed and comfort, providing a more relaxed seating position than is commonly found on carbon racing bikes.

The sloping top tube reaches the seat post at an angle that makes it appear to move almost continuously into the seatstays.

The thicker-than-usual downtube also has an ever-so-slight bend that creates an appealing profile view.

It’s a marriage of technical perfection and high-quality materials to deliver a truly unique carbon frameset.

The Trek Domane SL 5 comes in 9 different sizes to fit heights of 4’11 to 6’2.

  • 44 : 4’11” – 5’0″
  • 47 : 5’0″ – 5’2″
  • 50 : 5’2″ – 5’4″
  • 52 : 5’4″ – 5’6″
  • 54 : 5’6″ – 5’9″
  • 56 : 5’9″ – 5’11”
  • 58 : 5’11” – 6’1″
  • 60 : 6’1″ – 6’3″
  • 62 : 6’3″ – 6’5″

Trek’s Domane SL 5 is a serious carbon-framed road bike for dedicated riders looking to cover long distances on a regular basis.

It would suit semi-professional cyclists and triathletes looking to train regularly for competitions and events.

Sure, if you’re just a weekend rider and can afford it, you’ll love it.

However, a bike of this quality deserves to be put through its paces by those aiming for the podium.

It’s tough, fast, comparatively light, and most importantly: it provides a beautifully smooth ride.

Check out our other reviews on Domane AL 2 , AL3 , SL4 and SL6 .

Related:   Trek Bikes Explained – In-Depth Overview

High-quality carbon frame: check.

suggested

High-quality Shimano components: check.

A price tag under $3,500: check.

I would say, yes, the Trek Domane SL 5 is most certainly a piece of equipment that ticks all the right boxes to offer excellent value for money.

There are faster and lighter carbon road bikes in a similar price range, and there are tougher bikes too, but none of them find the balance quite as well as the Trek Domane SL 5 does.

This is a long-lasting bike that will seldom require any repairs or upgrades.

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  • Domane SL 5

Trek Domane SL 5 - 2022

Trek Domane SL 5

Domane SL 5 Disc is all about smooth riding, speed, and versatility. The lightweight OCLV Carbon frame has both Front and Rear IsoSpeed to smooth out bumps in the road and reduce fatigue, so you can stay stronger on long adventures. It has an upgraded Shimano 105 drivetrain, disc brakes for all-weather stopping power, and an easy-access internal storage compartment for stowing ride essentials. It's right for you if... You want a versatile, capable carbon bike with a super smooth ride that keeps you going strong on all-day adventures. It's a great choice if you're likely to ride in conditions where the added capability of wider tires and disc brakes will make a big difference. The tech you get A 500 Series OCLV Carbon frame with road-smoothing Front and Rear IsoSpeed, a stable Endurance Geometry, powerful flat-mount disc brakes, and a full 2x11 Shimano 105 groupset. Plus, a micro-adjust seatmast, fender mounts, and Tubeless Ready wheels wrapped in wider 700x32 tires. Internal storage and cable routing add to the bike's capability and sleek look. The final word Carbon, comfort, capability. Domane SL 5 Disc is purpose-built for long rides with a carbon frame, stable Endurance Geometry, and road-smoothing Front and Rear IsoSpeed. You also get the added advantage of a higher-end Shimano 105 drivetrain and powerful disc brakes that let you run wider tires. Why you'll love it - This bike is super versatile, super smooth, and equally suited to racing, club rides, and all-day adventures on the open road - Front and Rear IsoSpeed soak up fatiguing bumps in the road so you can stay stronger longer - The unique IsoSpeed Carbon fork, which swoops forward toward the dropouts, absorbs vibrations from the road, so your arms won't fatigue as quickly - A sleek internal storage compartment gives you a versatile spot to stow tools and gear - The stable Endurance Geometry is comfortable over long distances, but this is still a quick race bike

Geometry

Pedals sold separately

Due to supply-chain issues, specs are subject to change without notice..

* Subject to change without notice.

Part Numbers

Trek Domane SL 5 Color: Satin Trek Black

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Trek Domane SL 5 – Review 2023  

  March 23, 2022

By   m bhatia

Trek Domane SL 5

Trek Domane SL 5

The all-new Domane is designed to provide exceptional endurance road bike comfort without sacrificing performance. IsoSpeed road-smoothing technology allows you to ride for longer periods of time with less tiredness, while aerodynamic tube designs cut through the wind for greater free speed.

Domane is smooth, fast, and exciting no matter where you ride it: paved roads, hard-packed gravel, or the cobblestones of the world's greatest one-day races. 

The Trek Domane SL 5 Disc is all about speed, comfort, and versatility. The OCLV Carbon frame incorporates both Front and Rear IsoSpeed to smooth out road bumps and reduce tiredness so you can stay stronger on extended rides.

It boasts a Shimano 105 transmission, disc brakes for all-weather braking, and an easy-access inside storage pocket for storing ride essentials.

Technical Specifications:

Frame :  500 Series OCLV Carbon, front & rear IsoSpeed

Frame fit : Endurance

Fork : Domane SLR carbon, tapered carbon steerer

Wheels : Bontrager alloy

Tires : Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 120 tpi, 700x32c

Drivetrain :

Shifters : Shimano 105 R7025, short-reach lever, 11 speed

Front derailleur : Shimano 105 R7000, braze-on

Rear derailleur : Shimano 105 R7000, long cage, 34T max cog

Crank : Shimano 105 R7000, 50/34 (compact) 

Bottom bracket : Praxis, T47 threaded, internal bearing

Cassette : Shimano 105 HG700-11, 11-34, 11 speed

Pedals : N/A

Components :

Saddle : Bontrager P3 Verse Comp, steel rails, 145mm width

Seatpost : Bontrager carbon internal seatmast cap, integrated light mount, 20mm offset

Handlebar : Bontrager Comp VR-S, alloy, 31.8mm, 81mm reach, 118mm drop

Stem : Bontrager Elite, 31.8mm, Blendr compatible, 7 degree

Headset : FSA integrated

Brakes : Shimano 105 hydraulic disc, flat mount

Domane SL 5 frame design and size: 

Trek's IsoSpeed system includes front and rear decouplers as well as a rocker cup that allows the seat tube and steerer tube to bend. This contributes to a smooth ride without sacrificing road contact and stability.

The frame's endurance shape is developed to provide the rider a secure, controlled feeling in the saddle .

When it comes to carbon frames, the 500 Series OCLV is a little heavier, which is especially evident on hills. It compensates for this by easily cutting through uneven surfaces. 

Trek Domane SL 5

With a slightly higher headtube, the endurance geometry used in the Domane range of road bikes is designed for long-distance rides.It aims to strike a compromise between speed and comfort, with a more relaxed seating position than other carbon racing bikes. 

The slanted top tube meets the seat post at an angle that gives the impression of moving virtually continuously into the seat stays.

The downtube is also slightly thicker than typical, with a small curve that produces a pleasing profile view. A true one-of-a-kind carbon frameset is the result of a union of technological perfection and high-quality materials.

The Trek Domane SL 5 2022 is available in eight distinct sizes to accommodate heights ranging from 4'11 to 6'5.

What are the different parts included in Trek Domane SL 5?

Trek's choice of Shimano's 105 groupsets for the 2022 Trek Domane SL 5 was a wise one, and it complements the bike's high-end carbon frame.

Shimano's 11-speed cassette, shifters, chain, hydraulic brakes, front and rear derailleurs, and front and rear derailleurs make up the entire groupset.

The entire set works together to deliver outstanding, fault-free mechanics and smooth operation, allowing you to concentrate on the road ahead.

The Shimano 105 is one of the most durable drive chains on the market, and it has long been a favorite of cyclists all around the world.

The rear gearing and brake lines are run internally through the carbon body of the bike, keeping the frame clean. This not only covers the cables, but also improves the aesthetics and aerodynamics of the entire system.

Unfortunately, the front disc brake cable is not routed through the fork, leaving a tangle of zip ties running down the left fork. It's an unusual pick for a road bike at this price bracket, but it performs just as well, albeit with a less appealing appearance. 

How does it feel to ride Domane SL5? 

The Domane SL5 is perfect for everything. It's not often that we find a decent, comfortable riding posture right away, but the  Trek has a very upright stance that feels like it'll respond to a lot of power.

The sharp seatpost places us directly over the front end, while Shimano's hydraulic brake hoods provide a comfortable resting spot for our hands.

The Domane's 32c tires are a game-changer – it's eye-opening to spend so much time on such wide tires.

Their high-volume, low-pressure setup removes all road grit, leaving us refreshed enough to skip the cafe.

Second, although it may appear to be a minor point, the Domane's handlebar tops are fitted with foam pads before they're covered in tape, which means you can ride for miles with your hands on the bar tops with no vibration traveling up your wrists.

What We Like

  • IsoSpeed, which provides smooth rides over obstacles.
  • Serves a variety of purposes, from racing to adventures and club rides.
  • Comes with a storage compartment.
  • Comfortable over long distances

What We Don't Like

  • Can be a bit slow on steep hills.
  • At this price, it's heavier than most bikes.  

Why should you buy a Trek Domane SL 5 road bike?

The Trek Domane SL 5 is a serious carbon-framed road bike for serious riders who regularly travel great distances.

It would be ideal for semi-professional cyclists and athletes who regularly want to prepare for contests and events.

You'll adore it if you're simply a weekend rider and can afford it.

A bike of this kind, on the other hand, needs to be put through its paces by podium contenders.

It's durable, fast, fairly light, and, most importantly, it's incredibly smooth.

Is Domane SL5 Trek bike value for money? 

  • Endurance frame geometry that has been scientifically proven and tested. 
  • Shimano components of the highest quality.
  • A budget of less than $3,000.

Yes, the Trek Domane SL 5 is unquestionably a piece of gear that fulfills all the boxes and provides outstanding value for money.

In a comparable price range, there are quicker and lighter carbon road bikes, as well as tougher bikes, but none of them strike the right balance quite like the Trek Domane SL5.

This is a bike that will last a long time and will require little maintenance or improvements.

Is Trek Domane a good road bike?

The Domane 3rd generation is one of the top road bikes on the market. The Trek Domane's third generation is not just the best Domane, but also Trek's best-ever road bike. And it's currently one of the greatest road bikes on the market.

Is the Trek Domane SL 6 a good investment?

The Domane SL 6 is a durable bike that is also fun to ride, earning it a spot in this year's Editor's Choice. The Trek Domane SL 6 is the kind of bike with a super-stiff frame and race geometry. 

Is The Domane too heavy?

Yes, it's a heavy bike, but it climbs well, feels robust, and has no power loss. The weight penalty is due to the frame tubes' compliance and aerodynamics. It's not because of the Isospeed of the bike.

The Endnote:

The Trek Domane SL 5 is a road bike that dares to go where no other bike has gone before. This is due to the fact that, unlike some road bikes , its features are made of high-quality materials to ensure efficiency.

The Trek Domane SL 5 is a road bike with a 500 series OCLV carbon frame with IsoSpeed, high-performance gear, Shimano hydraulic disc brakes, and big, comfy tires. A storage box, blender compatible stem, fender mounts, and a micro-adjustable seatmast round out the bike's versatility.

Bikepacking Alliance

2023 Trek Domane SL 5 Gen 4 Review

Trek has been one of the leading manufacturers in the cycling industry for decades, and their latest release is no exception.

The 2023 Trek Domane SL 5 Gen 4 is a high-end road bike that promises to deliver a smooth and comfortable ride while also being fast and efficient.

In this review, we will take a closer look at the features of the 2023 Trek Domane SL 5 Gen 4 and evaluate its performance on the road.

2023 Trek Domane SL 5 Gen 4 Review

Whether you’re a seasoned cyclist or a beginner, this bike may be the perfect addition to your collection. So, let’s dive into the details and see what this bike has to offer.

The Trek Domane SL 5 Gen 4 is a road bike that has been designed for endurance rides and long-distance cycling.

With a lightweight carbon frame and a comfortable riding position, this bike is perfect for riders who want to take on challenging rides without sacrificing comfort.

2023 Trek Domane SL 5 Gen 4 Review

The 2023 Trek Domane SL 5 Gen 4 is a top-of-the-line road bike that offers exceptional performance and unmatched comfort.

Designed for serious cyclists who demand the best, this bike is packed with advanced features that make it the perfect choice for long-distance rides, races, and everything in between.

2023 Trek Domane SL 5 Gen 4 Review

– Advanced 500 Series OCLV Carbon frame construction for maximum strength and durability.

– IsoSpeed decoupler technology absorbs bumps and vibrations for a smooth, comfortable ride.

– Shimano 105 2×11 groupset featuring a 11-34t cassette and compact 50/34t chainrings provide reliable shifting and excellent performance.

– Tubeless-ready Bontrager Paradigm SL wheels and Bontrager R3 Hard-Case Lite 700x32mm tires for improved traction and reduced rolling resistance.

– Flat mount Shimano 105 hydraulic disc brakes for superior stopping power and control.

– Bontrager carbon seatpost and alloy handlebars for a lightweight, responsive feel.

– Sleek, modern design with eye-catching color options.

– Excellent customer reviews and ratings.

2023 Trek Domane SL 5 Gen 4 Review

Frame and Design

The 2023 Trek Domane SL 5 Gen 4 comes with a lightweight 500 Series OCLV Carbon frame that has been designed to provide maximum comfort on long rides.

The frame features Trek’s IsoSpeed technology that helps to absorb road vibrations, making the ride smoother and more comfortable.

The bike also comes with a carbon fork that helps to reduce weight and increase stiffness.

2023 Trek Domane SL 5 Gen 4 Review

The 2023 Trek Domane SL 5 Gen 4 comes with a Shimano 105 2×11 groupset, which is known for its reliability and smooth shifting.

The bike features a compact 50/34T crankset and an 11-34T cassette that provides a wide range of gears for climbing hills and sprinting on flats.

The bike also comes with Bontrager Paradigm SL wheels that are lightweight and provide excellent aerodynamics.

2023 Trek Domane SL 5 Gen 4 Review

The 2023 Trek Domane SL 5 Gen 4 has been designed for maximum comfort on long rides.

The bike features Trek’s IsoZone handlebar system that helps to reduce road vibrations and provide a comfortable grip.

The bike also comes with a Bontrager Verse Short Comp saddle that provides excellent support and comfort for the rider.

2023 Trek Domane SL 5 Gen 4 Review

Performance

The 2023 Trek Domane SL 5 Gen 4 is a bike that is designed for endurance rides and long-distance cycling.

The bike’s lightweight frame and comfortable riding position make it easy to ride for long hours without feeling fatigued.

The bike’s Shimano 105 groupset provides smooth shifting and a wide range of gears, making it easy to tackle challenging climbs and sprint on flats.

The 2023 Trek Domane SL 5 Gen 4 is a road bike that has been designed for endurance rides and long-distance cycling.

With its lightweight frame, comfortable riding position, and reliable components, this bike is perfect for riders who want to take on challenging rides without sacrificing comfort.

If you’re looking for a bike that can take you on long rides and provide maximum comfort, the 2023 Trek Domane SL 5 Gen 4 is definitely worth considering.

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

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Trek Domane SL 5 Gen 4 Road Bike 2023 Deep Smoke

Trek Domane SL 5 Gen 4 Road Bike 2023 Blue Sage

With Pre-Order , you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

With Pre-Launch , the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

Not happy with your purchase? Send it back to us or return in any of our stores and we will give you a full refund or exchange!

In the unlikely event that you are dissatisfied with your purchase please feel free to return your goods within 60 days of the purchase date for a full exchange or refund. Any item (excluding food and underwear) can be returned to us for any reason provided it is returned in ‘showroom condition’, with its original packaging, tags and a valid receipt/delivery note. Simply box up your items for return, include a cover note with the word REFUND or EXCHANGE inside & follow the below steps for safe return to our warehouse; where your return will be processed promptly.

Return Items by Post

It is your responsibility to ensure that the item is returned to us in a safe and secure manner, and in the event of a refund or exchange, in saleable condition (in original packaging and including all warranty, cards, manuals and accessories).

Customers are accountable for return shipping charges.

  • You should always keep proof of postage and we advise you to use a ‘signed for service’ when returning goods.
  • Send your package using a recorded delivery method (always keep a copy of your receipt!) to the following address:

Leisure Lakes Bikes, Unit 9 Centurion Industrial Estate, Centurion Way, Leyland, PR25 4GU

Checkout by Amazon Returns

If you used the pay by Amazon option when checking out then please send your package using a recorded delivery method (always keep a copy of your receipt!) with a note inside stating whether you want an exchange (what you want it exchanging for) or refund, to the following address:

Leisure Lakes Bikes Unit 9 Centurion Industrial Estate Centurion Way Leyland, PR25 4GU

Bike & Bulky Item Returns

If you wish to return your bike to us please keep it in the box it arrived in and call us on 01772 644340 and we will arrange a collection.

Please note the following:

  • a) If we have sent you the incorrect bicycle, we will cover the cost of collection and delivery of the correct model.
  • b) If we have delivered the bicycle you ordered, but upon inspection you decide it is not the bike for you, we will charge you £50.00 for the collection.

Please do not ride the bike as a full refund cannot be given if the bike has been used or damaged.

Return Items to a store

Any item (excluding food and underwear) can be returned to any Leisure Lakes Bikes store not just the one you made your purchase at, including those made online. The item must be returned in ‘showroom condition’, with its original packaging, tags and with a valid receipt/delivery note.

Wrong size or you don't like the item?

If returning items that are not suitable for either refund or exchange you are accountable for the delivery cost in returning it to us. You should always keep proof of postage and we advise you to use a ‘signed for service’ when returning goods.

New faulty items/ Wrong Item Received

If you have received items that are faulty or not what you ordered send them back to us (using the steps above) and we will cover the delivery cost of the return if it is within 14 days of delivery. If we have supplied the correct product, it is not faulty or it is outside of the 14 days we can not be liable for your postage charges. You should always keep proof of postage and we advise you to use a ‘signed for service’ when returning goods.

In the event that you have received items that are fault or not what you ordered, please send them back to us as soon as possible. Only in these cases will we cover the cost of the return shipping charges.

Faulty Items

If you have received items that are faulty please send them back to us using the steps above. Please include a covering letter describing the fault and if you would like the item replacing or refunding. Once the item arrives back at our Mail Order Centre you will receive an email notifying you about the progress. Faulty items are then forwarded onto the suppliers to confirm the warranty issue. Please be patient with us as we need to receive this confirmation from the suppliers before we can process your request for a replacement/refund.

When returning the item please use Royal Mail1 st Class Recorded* so that you have a tracking reference just in case! If your item arrived faulty we will refund your postage cost. If the item was in full working order at the time of delivery to you, we can not refund your return postage cost.

*In the event that you return a faulty/incorrect item we will refund your postage charge as long as it is 1 st Class Recorded or a lesser value service. We do not refund premium services.

Refunds will be processed using the same method of payment used for the original purchase. Credit and debit card refunds must be made to the card used for the original transaction, cheque payments will be refunded in cash but due to banking restrictions can only be refunded at least 14 days after the original purchase date. Due to the high incidence of fraud we regret that we are unable to offer any refund without a valid receipt/delivery note.

Refunds will be made for faulty or incorrect items, including any delivery charge incurred by the buyer (excluding ‘Special Delivery’) in the return of the item. If the products you ordered are delivered to you in good condition but you wish to return them for any reason we will refund the full value of the goods excluding any carriage charge upon receipt of your returned goods.

Items won’t be considered lost until after 15 working days of items beingdispatched. Once the 15 working days are up we will issue a refund or replacement.

Not received your order?

If you have not received your order please call us on 01772 644340 and a member of staff can confirm the shipping date. Unfortunately we cannot consider an item to be lost until 15 working days has passed (according to Royal Mail procedure). Once the 15 working days have passed we will be able to issue a full refund or resend your order.

Season:2023

Code:5270400-TREK23

It's right for you if...

You want a fast ride that's built for the long haul, and prefer the feel of vibration-damping, light weight, carbon and road-smoothing IsoSpeed. Rides might take you over smooth roads, rough roads and well beyond, and you want a bike with wide tyre clearance and disc brakes to get you through it all.

The tech you get

A light and refined 500 Series OCLV Carbon frameand fork with road-smoothing rear IsoSpeed, powerful flat-mount disc brakes, a full 2x11 Shimano 105 group set and tubeless-ready wheels with wider 700x32 tyres. An integrated cockpit, internal storage, top tube mounts and cable routing add to the bike's capability and sleek look.

The final word

Carbon, comfort, capability. The Domane SL 5 is the dream bike for long rides. Its light-and-fast carbon frame, stable endurance geometry and road-smoothing rear IsoSpeed keep you comfortable through long miles. You also get the added advantage of a higher-end Shimano 105 drivetrain and powerful disc brakes that let you run wide tyres.

Trek Domane SL 5 Gen 4 Road Bike Highlights

  • The sleek all-new frame saves weight and gives you more free speed thanks to updated Kammtail tube shapes
  • This bike is super versatile, super smooth and equally suited to all-day adventures on the open road, club rides and racing
  • Road-smoothing rear IsoSpeed absorbs fatiguing bumps in the road for a smoother, more comfortable ride
  • A sleek internal storage compartment gives you a versatile spot to stow tools and gear, while the top tube mounts let you cleanly bolt on a bag for all-day adventures
  • The stable Endurance Geometry is comfortable over long distances, but this is still a quick racing bike

Write a review for Trek Domane SL 5 Gen 4 Road Bike 2023 Deep Smoke

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  • £1900 £1900 Trek Domane SL Frameset 2019 Dnister Black/Viper Red

Finance your purchase

trek domane sl 5 disc carbon road bike

Consumer credit services are only available to over 18s and subject to status.

Credit is provided by V12 Retail Finance Ltd, a trading name of Secure Trust Bank Plc. which is registered in England and Wales: 541132. Registered Office: Yorke House, Arleston Way, Solihull, B90 4LH. Secure Trust Bank Plc is authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority with registration number 204550. For more information please visit www.v12retailfinance.com .

If you are intending to use finance as your payment option, please note we will only ship your order to your billing address, and not to an alternative delivery address.

This is for estimation purposes only. Actual finance application is completed during checkout.

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trek domane sl 5 disc carbon road bike

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Trek Domane SL 5 Gen 4 Road Bike 2024 in Matte Deep Smoke

Trek Domane SL 5 Gen 4 Road Bike 2024 in Plasma Grey

With Pre-Order , you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

With Pre-Launch , the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

Hassle free returns

Season:2024

Code:41348BLK

Key Features & Benefits:

  • 500 Series OCLV Carbon frame: Saves weight and gives you more free speed thanks to updated Kammtail tube shapes
  • Proven Componentry: Powerful Shimano hydraulic disc mount brakes and 24-speed 105 drivetrain.
  • 38 mm Tyre Clearance : Absorbs fatiguing bumps in the road for a smoother, more comfortable ride.

Full Specification:

  • Frame: 500 Series OCLV Carbon, IsoSpeed, internal storage, tapered head tube, internal cable routing, 3S chain keeper, fender mounts, flat mount disc, 142x12mm thru axle
  • Fork: Domane SL carbon, tapered carbon steerer, internal brake routing, mudguard mounts, flat-mount disc, 12x100 mm thru axle
  • Number of Gears: 24
  • Gear Shifters: S himano 105 R7120, 12-speed
  • Chainset: S himano 105 R7100, 50/34, 165 - 175 mm length
  • Chainrings: 50/34T
  • Rear Cassette: S himano 105 7101, 11-34, 12-speed
  • Chain: S himano SLX M7100, 12-speed
  • Front Derailleur: S himano 105 R7100, braze-on, down swing
  • Rear Derailleur: S himano 105 R7100, 36T max cog
  • Bottom Bracket: Praxis, T47 threaded, internal bearing
  • Pedals: Not supplied: Shop pedals here
  • Front Wheel: Bontrager Paradigm SL, Tubeless Ready, 21 mm rim width, 100x12 mm thru axle
  • Rear Wheel: Bontrager Paradigm SL, Tubeless Ready, 21 mm rim width, 142x12 mm thru axle
  • Front Tyre: Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 120 tpi, 700x32 mm
  • Rear Tyre: Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 120 tpi, 700x32 mm
  • Brakes: S himano 105 hydraulic disc
  • Handlebars: Bontrager Elite IsoZone VR-SF, alloy, 31.8 mm, internal Di2 routing, 75 mm reach, 128 mm drop
  • Handlebar Tape: Bontrager Supertack Perf tape
  • Headset: Integrated
  • Stem: Trek RCS Pro, -7-degree, 60 - 110 mm length
  • Saddle: Bontrager V erse Short Comp, steel rails
  • Seatpost: Domane carbon seat post, KVF shaping, 20 mm offset, 280-320mm length
  • Accessories: Bontrager BITS Internal Frame Storage Bag
  • Weight: 56 - 8.93 kg / 19.69 lbs (with TLR sealant, no tubes)

Sizing Chart for Trek Domane SL & SLR Unisex Carbon Road Bike

Geometry for trek domane sl & slr unisex carbon road bike.

trek domane sl 5 disc carbon road bike

All measurements in cm unless stated otherwise

Warranty information for trek:.

Lifetime warranty on Frame sets (frame and rigid fork), main frame and full suspension swing arms for the lifetime of the original owner, and Bontrager wheels with carbon rims. 2-year warranty on Rear suspension linkage components, including bearings, rocker link and accompanying hardware and components, Bontrager wheels with alloy rims, Paint and transfers. For full warranty policy please visit trekbikes.com

Trek Sizing Guide

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Every dollar of profit from new and refurbished bike sales going back into our charitable mission. Buy something you need, and you might just be helping out someone who is in need.

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Donate Bikes & Parts

All of the bikes that we are able to give away or sell at a reduced cost are donated to us by individuals or organizations.

A mechanic tuning a bike at the Bicycle Collective.

Volunteers are the lifeblood of the Bicycle Collective, grounding our culture as a bike shop by the community, for the community.

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Become A Member

Buy an annual Individual or Family Membership, and you will be supporting Bicycle Collective's charitable programs. Plus you get some cool benefits!

trek domane sl 5 disc carbon road bike

the new hub is open!

With everyone's support, we did it. We opened our doors in late 2023 and welcomed our stakeholders and clients into our New Hub. But that is not the finish line, that is the starting line of a new journey. 2024 promises to be a year of transformation for Bicycle Collective, with opportunities to grow our impact in ways we could not have previously imagined. While there is still much work to do, our Community Bike Shop space is open for those needing to rent a bench and/or tools to work on their bikes. Our retail floor is loaded with more refurbished bicycles than we have ever been able to display in our old West Temple shop, and our professional mechanics are available to help guide those who need some help. We are also able to accept donations of bicycles and parts. Check the Locations tab for current hours, and please stop in and say hello!

  • Salt lake city
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325 West 900 South, SLC, UT 84101

801-328-2453 [email protected] Directions

Our 141 rooftop solar panels are helping to offset our power consumption and put juice back into the grid, thanks to Rocky Mountain Power's Blue Sky grant program, and our friends at Creative Energies.

Ogden Bicycle Collective location in Ogden, Utah

936 E. 28th Street, Ogden, Utah 84403

801-997-0336 [email protected] Directions

HAPPY 2024!

Regarding bike donations: we accept bikes and parts donations anytime during open hours. In a pinch, you can leave items by the front porch if we are closed, but it is always best to come in when we are open.

Provo Bicycle Collective location in Provo, Utah

397 E 200 N, Provo, UT 84601

801-210-9032 [email protected] Directions

Happy 2024!

Bike and Parts Donations are welcome anytime during normal shop hours! We are grateful for your donations! If you are in a bind and have to leave items outside when we are closed, that's ok, but always better to come in when we are open and say hello!

T.J. Eisenhart mural painted on an exterior wall of the St. George Bicycle Collective location.

39 South Bluff Street Saint George, Utah 84770

435-429-2666 [email protected] Directions

Our updated winter hours for 2024 are posted. Stop by anytime during open hours for new and used parts, refurbished bikes, or to drop off bikes & parts donations. Or, just stop in to say hello!

Shop online

Inside of Bicycle Collective St. George location.

Shop St. George

See some of our inventory available to purchase online. We can ship to you, or have bikes ready for in-store pickup. Many more bikes on our shop floor. Come see us!

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Shop Salt Lake City

Browse our online inventory, or stop by the shop if you are looking for something that you don't see here.

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We have many more bikes in stock than we can show here! But this will give you an idea of some of our favorites.

trek domane sl 5 disc carbon road bike

Our online shop is just a small sampling of the many bikes that are available in store. Come on by!

BIKE OF THE MONTH: Giant Propel 56cm Road Bike

This month's BOTM is located in our Ogden store.

This a fairly newer model GIANT all carbon road bike, outfitted with a mix of modern Shimano Dura Ace and Ultegra components and wheels. Lightweight climbing machine, ready to race or ride.

2022 Annual Report Published

Another year of positive impacts for Bicycle Collective

Our 2022 Annual Report contains audited financials and impact numbers, from data collected across our four Utah locations in Salt Lake City, Ogden, Provo, and St. George. We also recognize community partners, our amazing staff and volunteer crews, and offer acknowledgement of many supporters large and small. Available online as a PDF, click the button below.

Stories View All

Bicycle Collective Wins Award from Kem C. Gardner Policy Institute

Bicycle Collective Wins Award from Kem C. Gardner Policy Institute

On April 16, 2024, staff and board members from Bicycle Collective attended a luncheon as one of five honorees for the annual  University of Utah Kem C. Gardner Policy Institute's   Informed Decision Maker Award.

Salt Lake Tribune image from article.

Salt Lake Tribune Visits Our New Hub

Salt Lake Tribune feature story on the opening of Bicycle Collective's New Hub, by Sofia Jeremias.

Ashton Stoker's Race Report from El Doce

Ashton Stoker's Race Report from El Doce

Ashton Stoker is an enthusiastic mechanic in our Ogden shop, but what really gets him stoked is endurance mountain bike racing. Ashton raced the El Doce endurance race, held at Powder Mountain back in late July. The race is known as a 12 Hour race, usually done in teams, but Ashton competed Solo.

St. George Bicycle Collective Volunteer Steve Morrill

April Volunteer Highlight: St. George

Each month, Bicycle Collective features a volunteer who has made an outstanding contribution from one of the Bicycle Collective's four locations. This month we're featuring Steve, an amazing volunteer from the Saint George shop.

Last Piece Of The Puzzle To Restore A Redline

Last Piece Of The Puzzle To Restore A Redline

Check out this vintage Redline BMX bike that was restored with a hard-to-find part available on Bicycle Collective's online store, thanks to our Provo location.

Artist, Lindsay Huss, stands in front of the mural she painted on the Ogden Bicycle Collective building in 2022

Bicycle Beautiful Ogden - Artist Interview

Read about how Bicycle Collective's Ogden shop mural came to be. Words from the artist, Lindsay Huss: " This mural is a celebration of all that Bicycle Collective does for our wonderful community. So many people do not have the privilege of owning a bike. Bicycle Collective regularly gives away bicycles to children and those in need of dependable transportation, focusing on marginalized communities."

Revisiting The Gift of a Bike

Revisiting The Gift of a Bike

The Gift of a Bike is a short video that captures the spirit of what it is like when staff and volunteers of Utah's Bicycle Collective deliver goodwill bicycles to a family in need. In this case, a family who fled their homeland of Eritrea, and were living in a refugee camp on Ethiopia. They had only been in the U.S. for 14 days!

Things To Do If Your Bike Gets Stolen

Things To Do If Your Bike Gets Stolen

One of our most frequently asked questions is, “My bike got stolen, what do I do?” This is a difficult emotional experience that sucks the joy out of cycling. The best way to avoid what often feels like a hopeless situation from occurring is to prevent it from happening. Here are a few actions one can take...

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Troubleshooting Common e-Bike Problems: The Ultimate Guide

Troubleshooting Common e-Bike Problems The Ultimate Guide

Maintaining an ebike in good working condition can be tricky business, especially if you’re a newbie ebike rider. 

An ebike will work smoothly only when all the parts are functioning properly. Luckily, not every hiccup with your electric bike means there’s a major problem. Sometimes, it just needs a bit of DIY maintenance.

Not to mention, many ebike owners don’t live near an electric bike service shop, so getting the job done themselves can be a lifesaver. In any case, knowing how to troubleshoot common problems of ebikes is valuable information for anyone owning an electric bike or thinking about buying one. 

In this article, we’re sharing a full guide on how to troubleshoot common ebike problems to help you get back on the road in no time. So without further ado, let’s get started!

1. Troubleshooting the Battery

If your ebike won’t start or keeps cutting off, the issue can often be traced back to the battery. Even if you’re just doing a routine troubleshooting session, the battery on your ebike should be the first component to inspect. Here are some ways to troubleshoot battery problems:

Check the Voltage

The first thing you need to do is check the battery voltage. The LEDs on the control panel and the ebike should light up, if this doesn’t happen, then there’s a chance that the battery hasn’t been charged or there may have been a blown fuse. 

Checking the battery voltage can give you a clue as to whether or not the battery has been damaged.

You can check the voltage of an ebike using a voltmeter by simply attaching the prongs to the positive and negative sides of the prongs on the battery. Another way to get a reading is to fasten the voltmeter directly into the charger connector on the battery.

If you find that the battery power dies out too quickly, then the first you should do is determine how long the battery pack has been left without charging. Accordingly, you’ll be facing one of 2 scenarios:

  • If the battery pack hasn’t been charged for 6 months or less, you may be able to recharge it successfully.
  • If the battery pack hasn’t been charged for more than 6 months, then it’s probably defective. 

If you know that your ebike has been sitting in the garage for some time without recharging and when you try to start it, the battery loses power too quickly, then it’s safe to assume that the battery is defective and will require a replacement. 

If you’ve charged your ebike battery for less than 8 hours, try letting it charge for 8 hours and then check if the electric bike can run at full speed. We highly recommended not to leave the battery charger plugged into your electric bike for more than 12 hours. This is to avoid the risk of overcharging or damaging the battery if the charger malfunctions.

Check the Battery Charger

While you’re at it, you should also check the battery charger. You don’t need any tools to get this done; just plug the battery charger into the wall and see if one or more of the indicator lights are illuminated. 

If the indicator light doesn’t illuminate or even blink on and off when the charger is plugged into the wall, then you’re dealing with a defective charger. To test the output voltage of your battery charger, you can use a multimeter or voltmeter.

The voltage reading must be a few volts higher than the battery charger’s rated voltage. If the output on the battery charger is lower than the battery charger’s rated voltage or if it’s zero, then the battery charger is defective.

For example, if your ebike is equipped with a 36V battery but the voltmeter reads 10 volts, then the battery is faulty. In this case, it’s a good idea to check if your ebike is still under warranty. 

If so, then you can contact the manufacturer and file a warranty claim for replacement parts. But if not, then you should buy a new battery.

If the voltmeter reads a surface charge of more than 36V, then the battery is fully charged and you can try troubleshooting another component.

Check the Battery Management System

If your ebike keeps cutting off, one of the most common reasons for such hiccups is a failing battery. If your battery pack is particularly choking when under load, then the issue could be that the battery management system is shutting it off to protect your battery pack from overeating.

Typically, the battery management system will cut off the power if it senses the battery draining too fast below certain safe levels.

Often than not, a severe voltage drop means that one or more cells in your battery pack have been damaged. There are several reasons for such malfunction including aging, too frequent charge cycles, improper battery management, and a manufacturing defect. 

If you’re experiencing power cuts with a new ebike that you’re just starting to use, it might be because the pack has been sized, engineered, or manufactured with less than the required high current capacity for supporting heavy loads.

When cells fail, it’s usually due to being under severe loads. One way to solve this is by dropping the assist level and pedaling a little harder when going up steep inclines or hills. This should reduce the load on your battery.

Another thing to keep an eye out for is the possibility of your battery arriving already pre-aged. This can happen in lower-quality batteries that are typically installed in cheaper bikes because they’re made by recycling batteries from other older devices such as laptops.

To find out if your battery is the culprit behind the repeated choking of your ebike, try using it on a different reliable electric bike with the same setup as yours. The same problem should happen if the battery is faulty. 

If you’ve owned your ebike for a few years and you’ve used it almost every day, the frequent rides may have just pushed the battery pack towards the natural end of its lifespan. Here, buying a new pack from the manufacturer will solve the issue.

Check the Battery Prongs

A failing battery can be the result of improper lining up of its prongs. If this is the case, the electrical circuit can’t be completed so no power will be produced.

Using a wrench, you can easily fix this issue by slightly bending the prongs to realign them into the correct position.

Check the Battery Charger Port

Additionally, you need to check the battery charger port. Be sure to first unplug the battery charger if it’s plugged into the wall. 

Next, plug the battery charger into the battery charger port on your ebike and observe the indicator light on the battery charger. If the indicator light illuminates when the charger is plugged into the electric bike, then the wiring and the wiring connectors going to the charger port as well the charger port itself are working.

If you have a voltmeter or a multimeter, you can test the voltage of the battery charger port. The level of the voltage measured at the charging port must be the same as the one rater for the battery pack. 

Alternatively, you can test the battery pack on another reliable electric bike where you ride the ebike at full throttle on flat ground. Note how long the battery pack will last. 

On flat ground, most ebikes have a battery range somewhere between 30 and 45 minutes. If your battery pack lasts less than 30 to 20 minutes, chances are it’s worn out and you have to replace it. Severely worn out batteries have a maximum range of 5 to 10 minutes.

  • If your ebike features a headlight, you can perform a load test by fastening an arch-shaped piece of cardboard over the headlight so you can see the beam from the headlight while riding.

From here, you can fully charge the battery pack and ride your ebike with the headlight on. Keep an eye out for the headlight’s beam shining on the cardboard. 

If the battery is good, the headlight will dim just a bit when you give the ebike full throttle. If the beam on the headlight dims severely when you give the ebike full throttle, then you’ll know that the battery is worn out.

  • If you can get your hands on a multimeter, you can perform a battery load test while your ebike is running. Start by fully charging the battery, then jack up the rear wheel by connecting the multimeter to the battery. Give the electric bike full throttle while engaging the brake on the rear without locking it up. 

When you engage the rear brake, the battery pack will go through a load so you can then read the voltage and find out how much it drops. If the battery is working well, the voltage will drop by a few volts only. Otherwise, the voltage will massively drop. 

2. Troubleshooting the Brake Motor Inhibitor

If you’ve dropped your ebike, then a part of the handlebars may have been damaged. You can easily spot this by visually inspecting your handlebars and brake levers for signs of any cosmetic damage. 

If you find that the brakes have been pulled back because of damage and can’t seem to break free, this will cause the motor inhibitor switch to stay turned on. To get your ebike running again, you’ll need to fix the jammed brake levers.

If the damage is significant, then the switch itself may require replacing. Such a process will need the skills of an expert electric bike mechanic.

  • Some people may suggest that you use your controller to figure out which wires are for the brake inhibitor so you can disconnect them completely to get rid of the problem. However, we stress that you never do that as it can be extremely dangerous on the road.

If your brakes aren’t functioning properly, then you should check the shoes or the brake pads for signs of wear. If they’re damaged or worn out, replace them right away. You should also check the brake cable tension and adjust it if necessary.

If you find the brake pads or the brake shoes in good condition then you may want to tighten the brake cable adjuster on the brake lever or the brake itself until the brake becomes more responsive. Make sure that the brakes aren’t rubbing on the rotor or rim when the brake lever is released. 

Once you’ve adjusted the brake cable adjusters to the end of their limits, screw them all the way in. Then, tighten the brake cable by loosening the brake cable stopper, pulling the brake cable tight, and re-tightening the brake cable stopper. 

You can make a final adjustment to the brake cable tension by unthreading the brake cable adjuster until you get the right tension. 

  • It’s crucial to your and others safety that you maintain the braking system; keep discs and rims clean and straight, promptly replace any worn-out brake shoes and pads, replace frayed or worn cables and housings, and lightly lubricate brake pivot points.

3. Troubleshooting the Controller

Think of the controller as the processor of your ebike operating system. As a result, it’s also one of the most common reasons why your electric bike may not be working properly. 

The controller’s job is to take input signals from all the controls and sensors on the ebike, analyze them, and then determine the best way to transfer the power coming from the battery to the motor.

Since the controller serves a huge yet sensitive purpose in the functioning of an ebike, the slightest technical glitch could ruin the established balance in any aspect including power transfer and distribution. 

Inspect your controller for any wires that may be loose, disconnected, or misconnected. If you do see disconnected cables, reconnect them to the proper port. In general, the wires should be color-coded so you can match the same color wire with the same color the outlet.

If the controller doesn’t work at all, make sure that the power switch is turned on. Also, check the fuse or circuit breaker.

If your ebike comes with a circuit breaker, you can reset the circuit breaker by pushing the breaker. However, you should be aware of any problems that may pop up as circuit breakers are designed to protect the system and there could already be an ongoing problem that’ll seriously damage components.

For ebikes with a fuse, you can simply remove it and hold it against some light to see if it’s burned out. If so, replace the fuse.

4. Troubleshooting the Throttle

A lot of ebikes on the market come with throttle control. If you overuse the throttle control, it may get stuck when pulled back and won’t return to the off position on its own.

If you do this repeatedly, the throttle will eventually loosen or get damaged. If this happens, you’ll tend to experience power cut-offs. 

The safest way to use the twist throttle is to pull it back and then slowly release it back into its original position once you’re done.

If the throttle is feeling loose or missing out on strokes from time to time, you can just replace it after testing whether or not it’s receiving steady power. This way you’ll know for sure that your throttle is to blame.

5. Troubleshooting the Pedal Assist

Malfunctions of the power or pedal assist system on your ebike may cause issues associated with pulsating or occasional power cut-offs. Different ebike models feature different pedal assist systems; some are built around the front sprocket chainring while others are built into the bottom bracket.

If you’ve recently made mechanical adjustments to the wheels, pedals, sprockets, derailleurs, and so on, this could be why you’re encountering power supply hiccups. Another reason for such issues could be the ring of magnets on the front sprocket; the sensors may be out of alignment due to being dirty or knocked around.

You can adjust the pedal-assist magnet position using a flathead screwdriver to push the disc nearer to the sensors. If this doesn’t work and you’re having a hard time determining whether or not your pedal assist system is faulty, it’s best to take your ebike to an electric bike service shop so they can remove and replace the faulty parts.

6. Troubleshooting the Motor Connections

As we mentioned earlier, loose wire connections are one of the most common reasons why you may be experiencing issues with your ebike. As such, the wires connected to the rear hub motor can often get loose, frayed, or damaged over time. 

If the wires are loose, you’ll probably have to replace the loose or damaged portions. Check if there are any melted or burned wires connected to the rear hub motor. 

Melted or burned wires are a sign of overheating. If the insulation on the copper coil wires melts due to overheating, occasional short circuits may occur causing the power to cut off. 

If the coils in the motor keep overheating, you’re potentially risking the motor’s integrity and may end up having to replace the motor to avoid damaging the controller.

Check the motor’s power transmission system for missing parts. Worn-out, missing, or damaged components could lead to problems in power transmission resulting in unwanted interruptions of power flow. 

There you have it, a comprehensive guide on how to troubleshoot common problems of ebikes. Even though DIY maintenance can be easy to perform, it’s still best to bring your electric bike to a service shop if you’re not fully confident in your skills.

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    Give the electric bike full throttle while engaging the brake on the rear without locking it up. When you engage the rear brake, the battery pack will go through a load so you can then read the voltage and find out how much it drops. If the battery is working well, the voltage will drop by a few volts only.