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Trek Domane SL 6 Disc Road Bike 2021

★★★★★ ★★★★★

This item is no longer available to buy. View similar products.

Product ID: 1081891

Packed with innovations including front and rear IsoSpeed, integrated frame storage, internal cable routing and a premium Trek 500 Series OCLV carbon frame, the Trek Domane SL 6 Disc is a fast yet comfortable endurance road bike.

Built-up with Shimano Ultegra components and Bontrager Paradigm Comp wheels, weight is kept low, with strength and reliability high. Explore further on this bike with the ability fit tyres up to 35mm wide in addition to mudguards.

Why buy your bike from Sigma Sports?

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Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.

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Built, Checked, Tuned and Tested

All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.

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We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.

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Free 30-Day Bike Insurance

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Product Highlights


Lightweight and stiff, OCLV 500 carbon soaks up road vibrations and provides a comfortable ride.


Reliable, precise and efficient, this 11-speed setup never misses a gear change.


Dampening units in the seat tube and head tube markedly reduce rough road vibrations.


Room to fit high volume 38mm wide tyres allows the Domane to tackle the roughest roads.

Trek Domane SL 6 Disc Road Bike 2021

Trek's latest Domane SL 6 Disc Road Bike includes updated IsoSpeed front and rear as well as clearance for 38mm tyres. This is a bike designed with an Endurance geometry that gives up nothing in terms of performance. The aero tubes and internal cable routing keep drag low, while the carbon construction is light and stiff. Supplied with tyres of a 32mm width, rolling is fast and smooth, but you can go wider still - up to 38mm - and benefit from improved comfort on the roughest roads. Trek has introduced internal storage on the downtube - enough to fit everything you need to fix a puncture - so you can store only what you need close to hand in your jersey pockets.

Shimano's second-tier Ultegra groupset brings smooth and fast shifting and reliable, powerful braking from the hydraulic discs for confidence at speed in all conditions.


  • Aerodynamic tube shapes
  • Trek 500 Series OCLV carbon frame
  • Front and rear IsoSpeed for the ultimate in vibration damping, smoothing even the roughest roads
  • Internal cable routing
  • Hidden mudguard mounts 
  • Clearance for 38mm tyres (35mm with mudguards)
  • Shimano hydraulic disc brakes
  • Integrated frame storage - the Bontrager Integrated Tool System (BITS) (purchased separately) stores a tube, tyre levers, CO2 and CO2 head neatly inside the downtube
  • The bottle cage sits on an easy-open storage door and holds a BITS multi-tool (purchased separately) giving riders quick access for mechanical adjustments
  • Integrated Flare tail-light mount
  • To use the BITS Integrated Tool System you will need to additionally purchase the Bontrager BITS Bag and Bontrager BITS Integrated Multi-Tool

Technical Specification

Frame Trek 500 Series OCLV carbon, front and rear IsoSpeed, BITS internal storage, tapered head tube, internal cable routing, micro-adjust seat mast, 3S chain keeper, DuoTrap S-compatible, mudguard mounts, flat-mount disc, 142x12mm thru-axle
Fork Trek Domane SL carbon, tapered carbon steerer, internal brake routing, mudguard mounts, flat-mount disc, 12x100mm thru-axle
Headset FSA Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom
Bottom Bracket Praxis Works, T47 threaded, internal bearing
Stem Bontrager Pro, 31.8 mm, Blendr-compatible, 7-degree
Handlebar Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, internal Di2 routing
Front Brake Shimano Ultegra R8070 hydraulic disc, Shimano RT800, 160 mm, CenterLock Rotors
Rear Brake Shimano Ultegra R8070 hydraulic disc, Shimano RT800, 160 mm, CenterLock Rotors
Brake Levers Shimano Ultegra R8020
Front Derailleur Shimano Ultegra R8000, braze-on
Rear Derailleur Shimano Ultegra R8000, long cage, 34t maximum cog
Shift Levers Shimano Ultegra R8020, 11-speed
Cassette Shimano Ultegra HG800-11, 11-34, 11-speed
Chain Shimano Ultegra HG701, 11-speed
Crankset Shimano Ultegra R8000, 50/34 (compact)
Front Wheel Bontrager Paradigm Comp 25, tubeless-ready, 25mm rim width
Rear Wheel Bontrager Paradigm Comp 25, tubeless-ready, 25mm rim width
Front Tyre Bontrager R2 Hard-Case Lite, aramid bead, 60tpi, 700x32c, clincher
Rear Tyre Bontrager R2 Hard-Case Lite, aramid bead, 60tpi, 700x32c, clincher
Saddle Bontrager Arvada Comp, steel rails
Seatpost Bontrager carbon seat mast cap, integrated light mount, 20mm offset
Pedals Available to be purchased separately
Manufacturer Claimed Weight Size 56 - 9.22kg / 20.32 lbs

Built, Checked, Tuned and Tested

All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.

All bikes collected from our shop, are built, tested and ready to ride.

Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.

If you require any assistance please contact our Customer Care team.

Trek Domane SL 6 Disc Road Bike 2021 Sizing

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