trek domane sl5 disc 2021

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Trek Domane SL5 Disc review

This Domane looks like a wheely good deal

Robert Smith

Warren Rossiter

Wonderful wheels, buttery-smooth ride

Big tyres don’t feel as quick as slimmer options

Expectations on a £3,000 or $4,000 bike would be for Shimano Ultegra, but Shimano’s latest 105 has 99 per cent of the performance for considerably less upfront cost. The 105 on Trek’s Domane here is matched to minimal R505 flat-mount brakes and rather oversized companion shifter units. Braking is enhanced by IceTech rotors with their distinct cooling fins and steel/aluminium sandwich construction.

• Specialized Roubaix vs. Trek Domane
• Trek Domane SL6 review

Where this 105 frugality comes good is with the wheelset. The SL5 has some serious hoops in Vision’s carbon disc-specific Metron 40 Ltd Disc. These 1675g, 40mm-deep wheels feature a blunted aero shape, the rim is wide enough to suit the Domane’s 32mm wide-as-standard tyres and the solidity of the build makes for flex-free running on the smooth cartridge bearing-equipped hubs.

The wheels alone cost £1,700 / US$2,200 /AU$2,960, and that accounts for more than half of the overall price. Suddenly the SL5 Disc doesn’t look so much like an expensive 105 bike, more a great value one with some very special running gear.

The SL5 feels more comfort-driven than the standard braked version

On the road, the SL5 feels plush. The Domane’s twin IsoSpeed design features a decoupled rear end for a suspension-like action, and a front system that mirrors the incredible bump swallowing action of the back. You get the most cushioning feel the faster you go and the bumpier the surface.

The SL5 feels more comfort-driven than the standard braked version, because the extra clearance created by the omission of caliper brakes has allowed Trek to fit huge 32mm rubber, which comes up even bigger when spread across the Metron 40 rims. The SL just crushes road buzz until it’s just not a factor, but you still get enough feedback to judge grip.

The comfort-giving plushness of the tyres does come at a price, meaning the SL5 doesn’t feel as sprightly as slimmer-tyred bikes. The SL’s chassis is so good we think it would be just as impressive on 28s, and you’d shave a few grams.

Mile-eating machine

This isn’t an out-and-out racer, but a superb mile-eating machine. Seldom do you return from four- hour-plus rides as ‘fresh’ as you do on the Domane, with the fatigue coming from your efforts and not the effort you’ve put in coping with vibrations, bumps and discomfort.

At nearly 8.5kg you will find lighter bikes for the same sort of money, but like all great sportive machines the SL5 doesn’t feel heavy. It would be easy to shed some weight if that’s your thing - a lighter carbon bar and skinnier tyres for a start - but we wouldn’t worry about such trivialities and just get out and enjoy the ride.

It’s set up for the dedicated endurance rider, with the big tyres, comfortably cushioned Affinity saddle and get-up-anything 50/34, 11-32 gearing. If all this makes you think that the SL’s going to be dull, think again.

The Domane’s handling is pitched just right, and really shines from the way in which the engineered mechanical compliance from the frame’s decouplers add bags and bags of traction.

The Domane has the uncanny feel of sitting in and holding its line through the fastest swooping bends, letting you go beyond your usual comfort zones to really stretch your limits.

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

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 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

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

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.

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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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

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 Road Bike 2021 Lithium Grey/Factory Orange

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Season:2021

Code:1043043-TREK21

The Trek Domane SL5 has earned its reputation as a fast, stable and highly versatile road platform for long rides and the world's biggest races. An electronic Shimano 105 drivetrain takes that performance to the next level, with precision shifting that's always fast and always reliable. A lightweight OCLV Carbon frame with Front and Rear IsoSpeed, hydraulic disc brakes keep it smooth and fast on long rides. Plus, it has an easy-access storage compartment for stowing ride essentials. A 500 Series OCLV Carbon frame with a stable Endurance Geometry and road-smoothing Front and Rear IsoSpeed, powerful flat-mount disc brakes and a full 2x11 Shimano 105 R7000 drive train for reliable and robust shifting precision. Plus, Tubeless Ready Bontrager Affinity Disc wheels, a fatigue-reducing Bontrager Elite IsoZone handlebar and mudguard mounts. Internal storage and cable routing add to the bike's capability and sleek look.

Trek Domane SL5 Disc features

• Reliable Quick Shifting  Never miss a shift again with the fast, reliable Shimano 105 R7000 drivetrain
• Trek IsoSpeed  Front and Rear IsoSpeed soak up fatiguing bumps in the road so you can stay stronger for longer
• In ternal Storage box  A sleek internal storage compartment gives you a versatile spot to stow tools and gear
• Endurance Geometry  The stable geometry is comfortable over long distances, but this is still a quick racing bike

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 tyres and disc brakes will make a big difference.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 drive train and powerful disc brakes that let you run wider tyres.

With 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 group set. Plus, a micro-adjust seat mast, mudguard mounts and Tubeless Ready wheels wrapped in wider 700x32 tyres. Internal storage and cable routing add to the bike's capability and sleek look.

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 drive train and powerful disc brakes that let you run wider tyres.

IsoSpeed Decoupler - The core of Trek's endurance comfort technology is our IsoSpeed decoupler, the result of an 18-month study of how a racing bike performs over rough roads and how that performance affects the rider. Its a technological Revolution.

Front IsoSpeed - Trek's front IsoSpeed technology is a breakthrough in ride-smoothing technology, bringing a new standard of compliance to a bike's front end that increases smoothness and balance so you can ride faster, longer and stronger.

500 Series OCLV - 500 Series OCLV achieves a superb balance of lightweight strength and stifness thats perfectly suited to the sophisticated frame technologies that distinguish Trek frames.

Endurance Fit - As befits the world's nost stable racing geometry. Still racy, but with a slightly higher head tube for better stability and greater comfort throughout the entire ride. 

Endurance Geometry - Performance. Stability. Victory. Trek endurance geometry is a triple threat, maximising control, handling and responsiveness through perfectly tuned rider weight bias.

Additional Tyre Clearance - The additional tyre clearance allows the Domane to go where no road bike has gone before. Race, wide, explore.

Performance Cable Routing - Our sleek, race optimised cable routing system virtually eliminates friction for the crispest shifting in any conditions. Three years in the making and well worth the wait.

Flat Mount Disc Brakes - All-new Flat Mount disc brakes are more elegant, lighter, smaller and cleaner than traditional disc brakes, providing superior performance and stopping power under harsh conditions.

Micro Adjust Seatmast - The all-new micro adjust seat mast is lightweight, strong, super aerodynamic and easy to use. Even a millimetre change in Geometry can alter your speed . Dial in your fastest, lowest-profile position ever with the all-new seat mast.

Mudguard Compatible - Mudguard mounts allow for full coverage so you can ride comfortably in less-than-ideal conditions.

Trek Domane Geometry 

How to measure yourself, measure your height.

Our handy size charts match your height to the appropriate frame size so you need to be sure you’ve measured your height accurately.

• Take off your shoes and stand with your back against a wall.
• Make sure legs are together and your shoulders are back.
• Place a pencil on top of your head and mark the wall (the best and easiest way to do this properly is with a friend to help you).
• Measure from the floor to the pencil mark you have just made with a tape measure.

Range of Reach

For most people to get the right frame size, measuring your height will suffice. However, you may find that your height is on the borderline of the range we suggest for a particular frame. If this occurs you need to measure the range of your reach or “Ape Index”. This will ensure you get a comfortable distance between the handlebars and your saddle.

• Stand up straight with your back against a wall.
• Life your arms out horizontally either side of you.
• Measure the distance from fingertip of one hand to fingertip of the other. This will give you your arm span.
• Subtract your height from this figure to get your Ape Index.
• If the result is positive (your arm span is greater than your height) you should go for the larger size of bike.
• If the result is negative (your arm span is less than your height you need the smaller size.

Stand Over Height

You should also consider your inside leg measurement when choosing your bike to ensure adequate stand over height. Stand over height is the clearance between the top tube and the bottom of your crotch. For mountain bikes we recommend a distance of 2-4 inches and for road or hybrid bikes 1-2 inches of clearance is required. This will ensure comfort when you’re stopped and standing astride the bike.

Our bike sizing charts take stand over height into consideration but if you have a particularly long or short inside leg measurement in relation to your height you will need to bear this in mind when selecting your frame size.

Riding Style

The way you ride and the type of bike you are into will also impact the frame size you should choose. For example, a trail devotee looking for an aggressive ride may prefer a smaller, more manoeuvrable bike size. It all comes down to personal preference and how the bike feels to you.

Our sizing charts aim to be as specific as possible so you can look up the particular type, make and model of bike you’re looking for. Remember, the sizes given in our guides are suggestions and should be used for general advice only. For the best possible fit  we recommend popping in to your local Leisure Lakes Bikes store, or call 0800 083 0888 for expert advice tailored to you.

Write a review for Trek Domane SL 5 Disc Road Bike 2021 Lithium Grey/Factory Orange

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• Domane SL 5

Trek Domane SL 5 2021

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Results have arrived, trek domane sl5 disc road bike - 2021, 56cm, item #brd25402, condition: certified pre-owned what's this, fit range: 5'10" - 6'1" sizing guide, every certified pre-owned bike passes our multi-point inspection.

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CPO bikes are gently ridden bikes that have been meticulously inspected, restored and serviced. Every CPO bike is cleaned, tuned and tested in our top-of-the-line Colorado headquarters. Road, mountain, ebike or gravel, TPC services each bike over 8 phases and multiple points of inspection.

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• Domane SLR Frameset

Trek Domane SLR Frameset

The award-winning Domane SLR Frameset is built with 600 Series OCLV Carbon and includes both Front and Adjustable Rear IsoSpeed so you can fine-tune your compliance to your terrain. This is the lightest endurance road bike frame Trek makes. It's designed for direct mount caliper brakes, and includes a headset and a full carbon Domane fork. It's right for you if... You're building up your dream endurance road bike for quickness and comfort on rough roads and your longest days in the saddle, and you're starting with the lightest, most advanced OCLV Carbon Domane frame available. The tech you get An ultralight 600 Series OCLV Carbon frame with Front and Adjustable Rear IsoSpeed so you can tailor your compliance to your terrain. Domane SLR Disc Frameset is built for flat mount disc brakes and includes a headset and a full carbon Domane fork. The final word Hands down, the best endurance road bike frameset Trek makes. Not only is it built with their ultralight 600 Series OCLV Carbon, but it has road-smoothing IsoSpeed tech that simply isn't available on any other platform. Why you'll love it - You can tune the amount of compliance in your frame to your preference with a simple slider adjustment - This bike has won the world's biggest one-day Classics, including Paris-Roubaix and Flanders - We're not the only ones who love it: the Domane SLR platform was awarded "Superbike of the Year" by Bikeradar

Geometry chart

* Subject to change without notice.

• Rider Notes

2021 Trek Domane SL 5

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

Manufacturer Price

In Stock: 56cm

In Stock: 52cm

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

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• 183cm, size 56cm, Just right

Oct 2022 · James Spender

The Domane is a tremendously smooth bike thanks to Trek’s IsoSpeed rear damping system and high volume, 32mm tubeless tyres

Over-engineered

Read Review

The new Domane is everything great about the old bike, plus lighter and quicker.

Sept 2022 · William Tracy

Simplified IsoSpeed headlines a lighter and faster version of the endurance bike built for Roubaix.

Oct 2021 · Ben Delaney

Lizzie Deignan (Trek-Segafredo) rode off the front of the peloton on the pavé and into the history books on Saturday, winning the first ever Paris-Roubaix Femmes aboard a Trek Domane with some custom touches. Deignan said her solo attack was definitely not the team plan, but that once she had a gap, she just kept … Continued

Jul 2021 · Mat Brett

Smooth-riding endurance bike with loads of tyre space and masses of versatility

Smooth ride

Space for big tyres

Internal storage

Not especially light

Jan 2021 · Dave Rome

Trek's new entry-level road bike combines an endurance fit with sporty handling and a whole bunch of versatility.

Huge tyre clearance, unique geometry is great for the purpose, quite comfortable ride quality, easy to service and upgrade, rides lighter than it feels to pick up, Shimano Tiagra just works, rim width, quality thru-axles.

Basic and heavy frame, making the bike tubeless requires new tyres and a handful of parts, extremely heavy wheels (especially given the bike’s price), handlebar drop shape is too compact.

Jul 2020 · Terry McKall

Entry level road bike or weekday commuter? How about both

You don't have to spend a fortune to get a great looking road bike with a ton of features. Trek's new Domane AL Disc is definitely worth a look.

Last updated 6 April Not listed for 69 days

• Trek 2022 Domane SLR Fork

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• Sport/Performance
• Domane SL 5 Women's

Trek Domane SL 5 Women's

Key features: - Front and Rear IsoSpeed decouplers smooth rough roads - 500 Series OCLV Carbon frame lets you ride stronger, longer - Direct mount brakes for increased stopping power and tire clearance - Top-level, women's-specific spec and Shimano drivetrain

Geometry chart

Pedals sold separately

* Subject to change without notice.