Trek Fuel EX 8 Gen 5


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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
An alloy frame, 140mm FOX Rhythm 34 fork, and 130mm of rear travel with an extra-efficient RE:aktiv damper. A Shimano XT 1×12 drivetrain with an extra-low 51-tooth climbing gear, plus a Bontrager Line dropper post.

The final word
Fuel EX 8 gives you added efficiency with Shimano’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″ wheels, S – frames get to choose between 27.5″ or 29″, and sizes M to XL get 29″ wheels



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
Axles Front: Boost 110 x 15mm thru-axle
Rear: Boost 148 x 12mm thru-axle
Rims/Wheels Bontrager Line Comp 30, Tubeless Ready, 6-bolt
Tires Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, Bontrager TLR valve, 50mm
Crankset Shimano SLX M7100, Boost (52mm chainline), 170/75mm length
Chainrings 30T
Bottom Bracket Shimano MT500, 92mm, PressFit
Chain Shimano SLX M7100, 12 speed
Rear Derailleur Shimano XT M8100, long cage, 51T max cog
Cassette/Rear Cogs Shimano XT M8100, 10-51, 12 speed
Shifters Shimano XT M8100, 12 speed
Handlebars Bontrager Line, alloy, 35mm, 27.5mm rise, 750/780mm width
Stem Bontrager Line, 35mm, Knock Block, 0 degree, 40/50mm length
Brake Levers MT4100
Brakes Front: Shimano 4-piston hydraulic disc, MT420 caliper
Rear: Shimano hydraulic disc, MT420 4-piston caliper
Saddle Bontrager Arvada, hollow chromoly rails, 138mm width
Seat Post Bontrager Line Dropper, 100/150mm travel, internal routing, 31.6mm, 345/440mm length

* Subject to change without notice.




Option UPC MPN Store SKU
Rage Red to Dnister Black Fade / X-Small / 27.5-inch 601842370155 1044452 FUE39583976E
Rage Red to Dnister Black Fade / Small / 27.5-inch 601842370148 1044453 FUE38226027E
Rage Red to Dnister Black Fade / Small / 29-inch 601842370131 1044454 FUE37548053E
Rage Red to Dnister Black Fade / Medium / 29-inch 601842370124 1044455 FUE37889759E
Rage Red to Dnister Black Fade / Medium/Large / 29-inch 601842370117 1044456 FUE38516301E
Rage Red to Dnister Black Fade / Large / 29-inch 601842370100 1044457 FUE37324411E
Rage Red to Dnister Black Fade / X-Large / 29-inch 601842370094 1044458 FUE38753751E
Rage Red to Dnister Black Fade / XX-Large / 29-inch 601842370087 1044459 FUE39868712E


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