Trek Fuel EX 9.9


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Fuel EX 9.9 makes no compromises. A carbon frame, carbon wheels, SRAM’s X01 Eagle 1×12 drivetrain, and FOX Factory Float suspension make this the one carbon full suspension mountain bike that rules every trail. It’s fast on singletrack, light on climbs, and stable through the rowdiest terrain you can find.

It’s right for you if…
You’re a mountain biker through and through, and want a single carbon bike for the best performance on everything from marathon races to gnarly descents and technical trail. You know you’ll be riding this bike on every trail, so you’re not going to compromise on frame material, suspension, or components.

The tech you get
A light and stiff full OCLV Mountain Carbon frame, 140mm FOX Factory 36 Float fork with GRIP2 damper, 130mm of rear travel with a FOX Factory Float shock featuring Trek’s exclusive RE:aktiv with Thru Shaft, and a 1×12 SRAM X01 Eagle drivetrain. Plus, powerful Shimano XT 4-piston hydraulic disc brakes, Tubeless Ready Bontrager Line Carbon 30 wheels with a 54-tooth Rapid Drive rear hub for quick engagement, a Bontrager Line Elite dropper post, and a Bontrager Line Pro OCLV Carbon handlebar. An internal storage compartment and Control Freak cable routing add to the bike’s capability and sleek look.

The final word
If you can have just one mountain bike, this is it. Fuel EX 9.9 has the highest-end parts on the best OCLV Mountain Carbon frame we make. It’s equally at home on fast singletrack, gnarly trail, and laying down miles on your next multi-stage race.

Why you’ll love it
– Fuel EX 9.9 is the single best choice for riders who want an all-mountain ripper that excels at everything from marathon races to burly technical terrain to singletrack
– RE:aktiv with Thru Shaft works faster than a normal shock, so it tracks the ground better and keeps you in control
– A sleek internal storage compartment gives you a versatile spot to stow tools and gear
– 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
– Make it yours: it’s fully customizable through Project One

featureAsset FuelEXTT

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.


Frame OCLV Mountain Carbon main frame & stays, internal storage, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel
Fork Fox Factory 36, Float EVOL air spring, GRIP2 damper, tapered steerer, 44mm offset, Kashima Coat, Boost110, 15mm Kabolt axle, 140mm travel
Headset Knock Block Integrated, cartridge bearing, 1-1/8″ top, 1.5″ bottom
Rear Shock Fox Factory Float EVOL, RE:aktiv with Thru Shaft 3-position damper, Kashima Coat, tuned by Trek Suspension Lab, 210x55mm
Axles Front: 15x110mm
Rear: 12x148mm
Rims/Wheels Bontrager Line Carbon 30, Tubeless Ready, 6-bolt
Tires Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi
Crankset SRAM X01 Eagle Carbon, DUB
Chainrings 32T
Bottom Bracket SRAM DUB, 92mm, PressFit
Chain SRAM GX Eagle, 12 speed
Rear Derailleur SRAM X01 Eagle
Cassette/Rear Cogs SRAM XG-1275 Eagle, 10-50, 12 speed
Shifters SRAM X01 Eagle, 12 speed
Handlebars Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise
Tape/Grips Bontrager XR Trail Elite, alloy lock-on
Stem Bontrager Line Pro, 35mm, Knock Block, 0 degree
Brakes Shimano XT M8120 4-piston hydraulic disc
Saddle Bontrager Arvada Pro, carbon rails
Seat Post Bontrager Line Elite Dropper, internal routing, 31.6mm

* Subject to change without notice.


Trek Fuel EX


Option UPC MPN Store SKU
Gloss Purple Phaze/Matte Raw Carbon / X-Small / 27.5-inch 601842224403 588759  
Gloss Purple Phaze/Matte Raw Carbon / Small / 27.5-inch 601842224397 588760  
Gloss Purple Phaze/Matte Raw Carbon / Small / 29-inch 601842224380 588761  
Gloss Purple Phaze/Matte Raw Carbon / Medium / 29-inch 601842224373 588762  
Gloss Purple Phaze/Matte Raw Carbon / Medium/Large / 29-inch 601842224366 588763  
Gloss Purple Phaze/Matte Raw Carbon / Large / 29-inch 601842224359 588764  
Gloss Purple Phaze/Matte Raw Carbon / X-Large / 29-inch 601842224342 588765  
Miami Green to Teal Fade / X-Small / 27.5-inch 601842151693 588710  
Miami Green to Teal Fade / Small / 27.5-inch 601842151709 588711  
Miami Green to Teal Fade / Small / 29-inch 601842151570 588712  
Miami Green to Teal Fade / Medium / 29-inch 601842151600 588713  
Miami Green to Teal Fade / Medium/Large / 29-inch 601842151617 588714  
Miami Green to Teal Fade / Large / 29-inch 601842151655 588715  
Miami Green to Teal Fade / X-Large / 29-inch 601842151679 588716  
Raw Carbon/Rage Red / X-Small / 27.5-inch 601842151587 588703  
Raw Carbon/Rage Red / Small / 27.5-inch 601842151594 588704  
Raw Carbon/Rage Red / Small / 29-inch 601842151631 588705  
Raw Carbon/Rage Red / Medium / 29-inch 601842151624 588706  
Raw Carbon/Rage Red / Medium/Large / 29-inch 601842151648 588707  
Raw Carbon/Rage Red / Large / 29-inch 601842151662 588708 DEM34491471D
Raw Carbon/Rage Red / X-Large / 29-inch 601842151686 588709  


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