Fuel EX 8 is the ideal trail bike for riders who want a versatile full suspension ripper that makes soul-crushing climbs less painful, but can also huck rowdy trails. It hits the sweet spot of value and performance in our mountain bike lineup by combining high-end parts with a stout but light alloy frame.
It's right for you if...
You're cool with your wheels leaving the ground, but you also like to go the distance on marathon singletrack sessions. You want a bike that lets you crush any trail, and your priority is on the parts.
The tech you get
A lightweight aluminum frame, 140mm FOX Rhythm 34 fork, and 130mm of rear travel with an extra-efficient RE:aktiv damper. A SRAM GX Eagle 1x12 drivetrain with an extra-low 52-tooth climbing gear, plus a Bontrager Line dropper post.
The final word
Fuel EX 8 gives you added efficiency with SRAM's latest, widest-range drivetrain and Trek's unique RE:aktiv damper that provides firm pedaling support without giving up any plush compliance.
Why you'll love it
- A wider gear range and more efficient suspension help you claw your way up tricky climbs you never thought you'd clean
- If you measure quality in performance per dollar, you won't do better than Fuel EX 8
- This bike will make you want to rail every corner, smash every rock garden, and charge every descent
- The shifter-style, underbar remote dropper post lever is super intuitive and easy to use
- We expanded our size range to ensure a better fit for all riders. And, you get the fastest wheel that fits your frame: XS frames get 27.5-inch wheels, S frames get to choose between 27.5-inch or 29-inch, and sizes M to XL get 29-inch wheels
Sizes X-Small – Small: 27.5-inch
Sizes Small – XX-Large: 29-inch
Smaller frames (XS and S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.
Due to supply-chain issues, Specs are subject to change without notice.
|Frame||Alpha Platinum Aluminum, 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|
|Headset||Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom|
|Rear Shock||Fox Performance Float EVOL, RE:aktiv 3-position damper, tuned by Trek Suspension Lab|
Front: 110 x 15mm
Rear: 148 x 12mm
Front: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle
Rear: Bontrager Line Comp 30, Tubeless Ready, 6-bolt, 54T Rapid Drive, SRAM XD driver, Boost148, 12mm thru axle
Size XS - SM: Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5x2.40''
Size SM - XXL: Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40''
|Crankset||SRAM X1 Eagle, DUB|
|Chainrings||30T steel ring|
|Bottom Bracket||SRAM DUB, 92mm, PressFit|
|Chain||SRAM GX Eagle, 12 speed|
|Rear Derailleur||SRAM GX Eagle|
|Cassette/Rear Cogs||SRAM Eagle XG-1275, 10-52, 12 speed|
|Shifters||SRAM GX Eagle, 12 speed|
|Handlebars||Bontrager Line, alloy, 35mm, 27.5mm rise, 750mm width|
|Stem||Bontrager Line, 35mm, Knock Block, 0 degree|
|Brakes||SRAM G2 R 4-piston hydraulic disc|
|Saddle||Bontrager Arvada, hollow chromoly rails, 138mm width|
|Seat Post||Bontrager Line Dropper, internal routing, 31.6mm|
* Subject to change without notice.
|Rage Red to Dnister Black Fade / X-Small / 27.5-inch||601842369999||1044468|
|Rage Red to Dnister Black Fade / Small / 27.5-inch||601842369982||1044469|
|Rage Red to Dnister Black Fade / Small / 29-inch||601842369975||1044470|
|Rage Red to Dnister Black Fade / Medium / 29-inch||601842369968||1044471||FUE37712458E|
|Rage Red to Dnister Black Fade / Medium/Large / 29-inch||601842369951||1044472||FUE38185234E|
|Rage Red to Dnister Black Fade / Large / 29-inch||601842369944||1044473||FUE37658457E|
|Rage Red to Dnister Black Fade / X-Large / 29-inch||601842369937||1044474|
|Rage Red to Dnister Black Fade / XX-Large / 29-inch||601842369920||1044475|
|Dark Aquatic/Trek Black / X-Small / 27.5-inch||601842370070||1043232|
|Dark Aquatic/Trek Black / Small / 27.5-inch||601842370063||1043234|
|Dark Aquatic/Trek Black / Small / 29-inch||601842370056||1043236|
|Dark Aquatic/Trek Black / Medium / 29-inch||601842370049||1043237||FUE32660895K|
|Dark Aquatic/Trek Black / Medium/Large / 29-inch||601842370032||1043238||FUE33877160K|
|Dark Aquatic/Trek Black / Large / 29-inch||601842370025||1043239||FUE32300713K|
|Dark Aquatic/Trek Black / X-Large / 29-inch||601842370018||1043240||FUE33855817K|
|Dark Aquatic/Trek Black / XX-Large / 29-inch||601842370001||1043241|