Top Fuel 9.9 SL is our fastest full-suspension XC mountain bike. Everything on this bike is geared towards helping you go faster and perform better. An OCLV Mountain Carbon frame, carbon components and super-lightweight full-suspension set-up make Top Fuel 9.9 SL a race-ready rocket that flies over gnarly terrain on its way to the podium.

At night, when you're lying in bed after a hard ride, you close your eyes and dream of carbon and the best XC parts available. Whether you're racing or training, you want to be the fastest. You want a bike that exceeds expectations in all categories ? light weight, strength, speed and efficiency.

Here's the truth: there's not much on this bike that isn't carbon. Our super-light OCLV Mountain Carbon frame, Bontrager Kovee Pro 30 carbon wheels with a 108-tooth Rapid Drive hub, SRAM XX1 Eagle 1x12 drivetrain, 100 mm front and rear suspension with a super-light and super-plush RockShox SID SE fork. Plus, a TwistLoc dual remote suspension lockout, SRAM Level Ultimate carbon brakes, and a carbon handlebar and seatpost.

So. Much. Carbon. This is hands down the fastest full-suspension XC mountain bike we make, trimmed with the best parts out there. A full OCLV Mountain Carbon frame, top-of-the-line suspension and carbon components come together in Top Fuel 9.9 SL to make the fastest bike on the line. The rest is up to you.
- This is full-suspension performance at the weight of a hardtail
- It's the choice of the pros of Trek Factory Racing XC, and for good reason: it's the fastest XC bike we make
- TwistLoc simultaneously locks out front and rear shocks for climbs and sprints with the simple Grip Shift-like motion
- Wider Kovee Pro 30 wheels provide better tyre support so you can run lower pressure and get more traction
- Make it yours: it's fully customisable through Project One