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Trek Fuel EX 9.9 X01 AXS

Trek Fuel EX 9.9 X01 AXS
  • Color: Miami Green to Teal Fade
  • Color: Gloss Purple Phaze/Matte Raw Carbon
  • Color: Raw Carbon/Rage Red
$8,499.99 - $8,999.99
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Wheel Size: Select wheel size
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Fuel EX 9.9 is light, fast, and decked out with top-shelf components. It has a carbon frame, carbon wheels, FOX Factory Float suspension, and a fully wireless SRAM X01 Eagle AXS electronic drivetrain and RockShox Reverb AXS dropper. This is 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 trails. You're looking for the best frame, suspension, and parts spec available, including the advantage of fully wireless electronic 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 fully wireless SRAM X01 Eagle AXS 1x12 electronic drivetrain and RockShox Reverb AXS dropper post. 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, and a Bontrager Line Pro OCLV Carbon handlebar. An internal storage compartment lets you securely stow ride essentials and doesn't detract from the bike's sleek look.

The final word
If you can have just one mountain bike, this is it. Fuel EX 9.9 pairs the best OCLV Mountain Carbon frame we make with the highest-end parts on the market, including a wireless electronic drivetrain and dropper. 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
- The SRAM X01 Eagle AXS drivetrain is smart, smooth, and completely wireless
- 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" wheels, S frames get to choose between 27.5" or 29", and sizes M to XL get 29" wheels
- Make it yours: it's fully customizable through Project One

Electronic drivetrain systems deliver excellent shifting, easy set up, and solid battery life. Here are the highlights of today’s electronic shifting systems:

Shifting Performance
Electronic shifting systems use powerful servomotors to rapidly shift the chain. Because microprocessors and sensors constantly monitor every aspect of the system, they shift with precisely and without chain rub.

Many major systems have customizable shifting. Some have the ability to add remote shifters for common riding positions, and some even allow you to change the functions of the shifting buttons.

Electronic groupsets are responsive and consistent. There are no cables to stretch and wear out, so you get a flawless shift every time. The added bonus is you’ll never have to replace a derailleur cable ever again.

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.


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 bolt-on 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
XS–S: 210x52.5mm; S–XL: 210x55mm
Axles Front: 110x15mm
Rear: 148x12mm
Rims/Wheels Bontrager Line Carbon 30, Tubeless Ready
Hubs 6-bolt, 54T Rapid Drive, XD Driver
Tires Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 2.60''
Crankset SRAM X01 Eagle AXS Carbon, DUB, Boost
XS–SM: 170mm length; M–XL: 175mm length
Chainrings 32T alloy ring
Bottom Bracket SRAM DUB, 92mm, PressFit
Chain SRAM XX1 Eagle, 12 speed
Rear Derailleur SRAM X01 Eagle AXS
Shifters SRAM Eagle AXS, wireless, 12-speed
Handlebars Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width
Tape/Grips Bontrager XR Trail Elite, alloy lock-on
Stem Bontrager Line Pro, 35mm, Knock Block, 0 degree
XS– S: 40mm length; M–XL: 50mm length
Brakes Shimano XT M8120 4-piston hydraulic disc
Saddle Bontrager Arvada, austenite rails, 138mm width
Seat Post RockShox Reverb AXS, 100mm travel, wireless, 31.6mm
XS– S: 340mm length; M–ML: 440mm length; L–XL: 480mm length
Accessories & Extras Bontrager BITS Internal Frame Storage Bag

* Subject to change without notice.


Part Numbers

Option UPC MPN Store SKU
Gloss Purple Phaze/Matte Raw Carbon / X-Small / 27.5-inch 601842224472 595346
Gloss Purple Phaze/Matte Raw Carbon / Small / 27.5-inch 601842224465 595348
Gloss Purple Phaze/Matte Raw Carbon / Small / 29-inch 601842224458 595350
Gloss Purple Phaze/Matte Raw Carbon / Medium / 29-inch 601842224441 595352
Gloss Purple Phaze/Matte Raw Carbon / Medium/Large / 29-inch 601842224434 595353
Gloss Purple Phaze/Matte Raw Carbon / Large / 29-inch 601842224427 595354
Gloss Purple Phaze/Matte Raw Carbon / X-Large / 29-inch 601842224410 595355
Miami Green to Teal Fade / X-Small / 27.5-inch 601842224540 595332
Miami Green to Teal Fade / Small / 27.5-inch 601842224533 595334
Miami Green to Teal Fade / Small / 29-inch 601842224526 595336 FUE37464836E
Miami Green to Teal Fade / Medium / 29-inch 601842224519 595338
Miami Green to Teal Fade / Medium/Large / 29-inch 601842224502 595340 FUE38671222E
Miami Green to Teal Fade / Large / 29-inch 601842224496 595342
Miami Green to Teal Fade / X-Large / 29-inch 601842224489 595344
Raw Carbon/Rage Red / X-Small / 27.5-inch 601842224618 595319
Raw Carbon/Rage Red / Small / 27.5-inch 601842224601 595321
Raw Carbon/Rage Red / Small / 29-inch 601842224595 595323
Raw Carbon/Rage Red / Medium / 29-inch 601842224588 595325
Raw Carbon/Rage Red / Medium/Large / 29-inch 601842224571 595327
Raw Carbon/Rage Red / Large / 29-inch 601842224564 595329
Raw Carbon/Rage Red / X-Large / 29-inch 601842224557 595331