Why buy your bike from Sigma Sports?
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.
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.
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.
We've partnered with PedalSure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
Trek Domane AL 3 Disc Road Bike 2021
Trek's Domane AL 3 Disc Road Bike is an entry-level model that's comfortable yet sporty, one that you won't hold you back as you put in the miles and build experience out on the roads. The strong aluminium frame keeps weight down, and it's paired with a carbon fork that incorporates innovative IsoSpeed technology to smooth out rough surfaces. There's clearance on the frameset for tyres up to 38mm wide, and the wheels this bike rolls on are ready for a tubeless setup if you wish to convert. Mudguard mounts make it a great all-weather steed so you can get home or to your destination dry and clean.
Shimano Sora makes up the drivetrain, providing 18 gears and keeping the shifting smooth and reliable. Tektro mechanical discs ensure powerful braking on wet and dry roads so you can ride fast in complete confidence that you'll also stop fast when required.
- Trek 100 Series Alpha Aluminium frame with hidden cables
- The unique IsoSpeed Carbon fork, which swoops forward toward the dropouts, absorbs vibrations from the road so your arms won't fatigue as quickly
- Endurance Geometry
- Setting your wheels up as tubeless reduces the overall weight of your bike and the chance you’ll get a flat
- Bigger tyre clearance (up to 38c) lets you run wider tyres for more traction and stability on trails and other light gravel roads
- DuoTrap S compatibility makes it easy to wirelessly track your rides, so you can set goals and watch yourself reach them
- Shimano Sora 9-speed compact drivetrain
- Tektro C550 mechanical disc brakes
|Frame||Trek 100 Series Alpha Aluminium, tapered head tube, internal routing, mudguard mounts, DuoTrap S compatible, flat mount disc, 142x12 thru-axle|
|Fork||Trek Domane AL carbon, tapered alloy 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||Shimano RS500, 68mm, threaded external|
|Stem||Bontrager Elite, 31.8mm, Blendr compatible, 7-degree|
|Handlebar||Bontrager Comp VR-C, alloy 31.8mm, 100mm reach, 124mm drop|
|Bar Tape||Bontrager Supertack Perf|
|Front Brake||Tektro C550 mechanical disc brake, dual piston, flat mount, 160mm rotor|
|Rear Brake||Tektro C550 mechanical disc brake, dual piston, flat mount, 160mm rotor|
|Brake Levers||Shimano Sora R3000|
|Front Derailleur||Shimano Sora R3000, 31.8mm clamp|
|Rear Derailleur||Shimano Sora R3000, long cage, 34T maximum cog, 9-speed|
|Shift Levers||Shimano Sora R3000, 9-speed|
|Chain||Shimano Sora HG53, 9-speed|
|Cassette||Shimano Sora HG400, 11-32, 9-speed|
|Crankset||Shimano Sora R3000, 50/34 (compact)|
|Front Wheel||Formula RX-512 alloy, 6-bolt, 100x12mm thru-axle hub / Bontrager Affinity Disc, tubeless-ready, 24-hole, 21mm width, Presta valve rim|
|Rear Wheel||Formula RX-142 alloy, 6-bolt, Shimano 11-speed freehub, 142x12mm thru-axle / Bontrager Affinity Disc, tubeless-ready, 24-hole, 21mm width, Presta valve rim|
|Front Tyre||Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32c, clincher|
|Rear Tyre||Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32c, clincher|
|Saddle||Bontrager P3 Verse, steel rails, 145mm width|
|Seatpost||Bontrager alloy, 27.2mm, 8mm offset|
|Pedals||Available to purchase separately|
|Manufacturer Claimed Weight||10.54kg / 22.55lbs (size 56)|
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 specified), 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. We do not install accessories to bikes, including mudguards.
Trek Domane AL 3 Disc Road Bike 2021 Sizing
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