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 Fuel EX 8 GX Mountain Bike 2021
SRAM 12-speed components, a tough aluminium frame and FOX shock unit help make the Trek Fuel EX 8 GX Mountain Bike perfect for trail riding of any kind. With 140mm of travel from the Rhythm 34 fork and 130mm from the Performance Float EVOL rear shock, traction is superb whilst larger hits are equally well dealt with and by flipping the Mino Link over the angles can be slackened for greater stability at speed.
The 10-52 tooth 12-speed cassette has the largest range available, ensuring that the right ratio is always at hand and the 4-piston G2 R hydraulic disc brakes give great control when the time comes to head downhill. Confidence is also boosted by the inclusion of the Bontrager Line Dropper seatpost which allows the saddle to be quickly dropped out of the way for greater manoeuvrability when required.
Wide Bontrager Line Comp 30 wheels provide good support for the XR4 Team Issue tyres, and by using 27.5” wheels on the smaller sized bikes and 29” on the larger sizes handling has been kept consistent for all riders. As both wheelset and tyres are tubeless-ready, the conversion is simple, allowing for lower pressures and improved grip without the risk of pinch punctures.
- Alpha Platinum Aluminium frame with Knock Block, Mino Link and 130mm of travel
- FOX Performance Float EVOL rear shock with RE:aktiv 3-position damper
- FOX Rhythm 34, Float EVOL air spring fork with 140mm travel
- SRAM G2 R 4-piston hydraulic disc brakes
- SRAM GX Eagle 12-speed mechanical groupset
- Bontrager Line Dropper seatpost
- Bontrager Line Comp 30 wheelset
|Frame||Trek Alpha Platinum Aluminium, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel|
|Fork||FOX Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel|
|Rear Shock||FOX Performance Float EVOL, RE|
|Headset||Trek Knock Block Integrated, cartridge bearing, 1-1/8" top, 1.5" bottom|
|Bottom Bracket||SRAM DUB, 92mm, PressFit|
|Stem||Bontrager Line, XS, S - 40mm, M to XL - 50mm, Knock Block, Blendr compatible, 0 degree|
|Handlebar||Bontrager Line, alloy, 35mm, 27.5mm rise, 750mm width|
|Grips||Bontrager XR Trail Elite, alloy lock-on|
|Front Brake||SRAM G2 R 4-piston hydraulic disc|
|Rear Brake||SRAM G2 R 4-piston hydraulic disc|
|Brake Levers||SRAM G2 R hydraulic disc|
|Rear Derailleur||SRAM GX Eagle|
|Shift Levers||SRAM GX Eagle, 12-speed|
|Chain||SRAM GX Eagle, 12-speed|
|Cassette||SRAM XG-1275 Eagle, 10-52, 12-speed|
|Crankset||Truvativ Descendant 6k Eagle, DUB, 30T steel ring, Boost|
|Front Wheel||Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost 110|
|Rear Wheel||Bontrager Line Comp 30, Tubeless Ready, 6-bolt, SRAM XD driver, Boost 148|
|Front Tyre||Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60" front, 29x2.40" rear (smaller sizes|
|Rear Tyre||Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60" front, 29x2.40" rear (smaller sizes|
|Saddle||Bontrager Arvada, hollow chromoly rails, 138mm width|
|Seatpost||Bontrager Line Dropper, internal routing, 31.6mm (XS, S - 100mm drop, M, ML, L, XL - 150mm drop)|
|Pedals||Available to be purchased separately|
|Claimed Manufacturer’s Weight||13.78kg / 30.39lbs (with TLR sealant, no tubes) size medium|
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 Fuel EX 8 GX Mountain Bike 2021 Sizing
Forgotten Your Password?
Please enter your registered email address below and we'll send you an email explaining the next step.
Select a store
Select the store you visit most frequently below and their stock information will show on product pages.