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 Émonda ALR 4 Disc Road Bike 2021
Offering pro looks and reliable components, Trek’s Émonda ALR 4 Disc Road Bike is the perfect bike for hilly sportives and long training rides. The Ultralight 300 Series Alpha Aluminium frame looks as slick as carbon and has the ride quality to match, with the carbon fork adding to the bikes great handling characteristics. Thru-axles and Shimano disc brakes keep the steering precise and braking confident, meaning more speed through corners and on fast descents.
Shimano’s 10-speed Tiagra drivetrain pairs a compact 50/34 tooth chainset with a 12-28 cassette for good hill-climbing gears, with all the cables hidden inside the frame for a cleaner aesthetic. The Bontrager Affinity Disc wheels look great in stealth black but are shallow enough to handle blustery conditions with aplomb.
- Trek Ultralight 300 Series Alpha Aluminium frame
- Émonda SL full carbon fork with carbon steerer
- Shimano Tiagra 10-speed groupset
- Shimano Tiagra hydraulic disc brakes
- Bontrager Affinity Disc wheelset
|Frame||Trek Ultralight 300 Series Alpha Aluminium, Invisible Weld technology, tapered head tube, Control Freak internal routing, DuoTrap S compatible, flat mount disc, 142x12mm thru-axle|
|Fork||Trek Émonda SL full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm thru-axle|
|Headset||FSA Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom|
|Bottom Bracket||Shimano BB71, 86.5mm, PressFit|
|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 tape|
|Front Brake||Shimano Tiagra hydraulic disc|
|Rear Brake||Shimano Tiagra hydraulic disc|
|Brake Levers||Shimano Tiagra hydraulic disc|
|Front Derailleur||Shimano Tiagra 4700, braze-on|
|Rear Derailleur||Shimano Tiagra 4700, long cage, 34T max cog 10-speed|
|Shift Levers||Shimano Tiagra R4725, 10-speed|
|Chain||Shimano Tiagra HG54, 10-speed|
|Cassette||Shimano Tiagra HG500, 12-28, 10-speed|
|Crankset||Shimano Tiagra 4700, 50/34t|
|Front Wheel||Bontrager alloy, sealed bearing, Center Lock disc, 100x12mm thru-axle hub with Bontrager Affinity Disc, Tubeless Ready, 24-hole, 21mm width, Presta valve rim|
|Rear Wheel||Bontrager alloy, sealed bearing, Center Lock, Shimano 11-speed freehub, 142x12mm thru-axle hub with Bontrager Affinity Disc, Tubeless Ready, 24-hole, 21mm width, Presta valve rim|
|Front Tyre||Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x25c clincher|
|Rear Tyre||Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x25c clincher|
|Saddle||Bontrager P3 Verse, steel rails|
|Seatpost||Bontrager Approved, alloy, 27.2mm, 8mm offset|
|Pedals||Available to be purchased separately|
|Claimed Manufacturers Weight||9.33kg 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 Emonda ALR 4 Disc Road Bike 2021 Sizing
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