TREK 2023 Fuel EX 9.9 XTR Gen 6

The Fuel EX 9.9 combines a light and nimble carbon frame with Shimano's best drivetrain and top-shelf suspension for a ride that's ready to rally wherever you point it. It's dripping with high-end upgrades like buttery-smooth Kashima coat, quick-engaging carbon wheels, a super-slick one-piece bar and stem, and handy multi-tool hidden in the steerer tube.

You want a do-it-all mountain bike that's second to none. You care about it all - from a pristine carbon frame and wheels to the lightest and best drivetrain from Shimano, and you don't want to sacrifice suspension performance for anything. You have good taste, and you know it.

A light and stiff OCLV Mountain Carbon frame with a 150 mm FOX Factory 36 fork with EVOL air spring and GRIP2 damper and FOX Factory Float X rear shock with 2-position damper that makes light work of the gnarliest rock gardens on the mountain. Carbon wheels that keep weight down while offering stiff and reliable tracking through rowdy terrain, and Shimano's finest drivetrain with the lightweight, reliable and precise XTR component package. Plus, you'll get adjustable geometry for fine-tuning your ride and in-frame storage that lets you keep your set-up tidy without leaving behind trail essentials.

The Fuel EX 9.9 is a top-tier trail bike that's built for riders with an affinity for the finer things in life. It's a complete package, with the industry's best components from the ground up, with Shimano's XTR drivetrain, FOX Factory fork, carbon wheels and frame, and geometry that's ready to be tuned for how you ride.
- The Fuel EX Gen 6 gives you 140/150 mm of travel with extra adjustability features and more stable handling, plus a more robust frame with internal storage
- We expanded our size range to ensure a better fit for all riders, and use the best-fitting wheels for each frame size: XS frames get 27.5? wheels, S frames get to choose between 27.5? or 29?, and sizes M and up get 29? wheels
- It's ready to rip with lightweight carbon wheels and the finest component package from Shimano and FOX
- In-frame storage makes it easy to bring along all your essentials, while keeping your set-up streamlined and sleek
- With the adjustable angle headset (angled cups sold separately) and Mino Link, you can choose from six different geometry configurations

Internal Storage
Internal frame storage makes it easy to ditch the pack and still carry your ride essentials.



Active Braking Pivot
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.



Slack or steep, the choice is yours
Install angle-adjust headset cups (sold separately) to tweak the 64.5-degree head tube angle a degree steeper or slacker to your liking - all without impacting your bottom bracket height.



Adjust the sus for full send
Adjust the leverage rate with just a flip of a chip. Ride it in the Less progressive setting for a plusher feel perfect for rugged trails with square-edge bumps. Flip it to More progressive when you're hitting big features and don't want to bottom-out, or when you want to run a coil shock.

Size-specific stays
Size-specific chainstays provide balanced handling to keep the ride nimble for smaller riders and improve front wheel traction on climbs for taller riders.

Business at the front, party at the back
Craving the nimble ride of 27.5? wheels but don't want to sacrifice the speed of a 29er? No need to choose. The Fuel EX is mullet-ready, just throw Mino Link into high, toss on a 160 mm fork and get ready to party.