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
A dropper seatpost allows you to quickly lower and raise your seat to give you an ideal riding position. Dropping your seat creates a lower center of gravity for better control and maneuverability on steep descents, while raising it puts you at normal riding height for efficient pedaling.
Construction can include either hydraulic- or cable-actuated systems and the post’s travel can either be infinitely adjustable or stopped at set intervals, depending on the model.
Dropper seatposts come in standard lengths and diameters and vary by the amount of travel.
WILL MY BIKE HAVE A CURVED TOP TUBE?
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.
Sizes X-Small – Small: 27.5-inch
Sizes Small – XX-Large: 29-inch
Pedals sold separately
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|
|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|
|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|
|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.
|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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