Trek Top Fuel 9.9 SL

Trek Top Fuel 9.9 SL
  • Color: Gloss Purple Phaze/Matte Trek Black
  • Color: Matte Carbon Smoke
  • Color: Radioactive Orange/Trek Black
  • Color: Viper Red/Trek White
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Top Fuel 9.9 SL is Trek's fastest full suspension XC mountain bike. Everything on this bike is geared toward helping you go faster and perform better. An OCLV Mountain Carbon frame, carbon components, and super-lightweight full suspension setup make Top Fuel 9.9 SL a race-ready rocket that flies over gnarly terrain on its way to the podium.

It's right for you if...

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.

The tech you get

Here's the truth: there's not much on this bike that isn't carbon. Trek's superlight OCLV Mountain Carbon frame, Bontrager Kovee Pro 30 carbon wheels with a 108-tooth Rapid Drive hub, SRAM XX1 Eagle 1x12 drivetrain, 100mm 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.

The final word

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.

Why you'll love it

1 - This is full suspension performance at the weight of a hardtail
2 - It's the choice of the pros of Trek Factory Racing XC, and for good reason: it's the fastest XC bike Trek makes
3 - TwistLoc simultaneously locks out front and rear shocks for climbs and sprints with the simple Grip Shift-like motion
4 - Wider Kovee Pro 30 wheels provide better tire support so you can run lower pressure and get more traction


Frame OCLV Mountain Carbon main frame & stays, ABP, Full Floater, EVO link, tapered head tube, Mino Link, MicroTruss, Control Freak internal routing, Carbon Armor, PF92, Boost148 & G2 Geometry on 29ers, 100mm travel
Fork RockShox SID SE Carbon, DebonAir, Motion Control damper, TwistLoc remote lockout, tapered steerer, G2 Geometry w/51mm offset on 29ers, Boost110, 100mm travel
Headset FSA IS-2, 1-1/8-inch top, 1.5-inch bottom
Rear Shock Fox Factory Float DPS, 2-position remote, Kashima Coat, tuned by Trek Suspension Lab, 6.5x1.5-inch
Axles Front: 15 x 110mm
Rear: 12 x 148 (15.5-inch size: 12 x 142mm)
Rims/Wheels Bontrager Kovee Pro 30 carbon, Tubeless Ready, 108T Rapid Drive, Boost110 front, Boost148 rear (15.5-inch: 142x12 rear), tubeless strips included, valves sold separately
Tires Bontrager XR2 Team Issue, Tubeless Ready, 120 tpi, aramid bead, 29x2.20 (15.5-inch: 27.5x2.20)
Crankset SRAM XX1 Eagle Dub
Chainrings 34T Direct Mount
Bottom Bracket SRAM DUB Press Fit, 92mm
Chain SRAM XX1 Eagle
Rear Derailleur SRAM XX1 Eagle, Roller Bearing Clutch
Cassette/Rear Cogs SRAM XG-1299, 10-50, 12 speed
Shifters SRAM XX1 Eagle, 12 speed
Handlebars Bontrager XXX, OCLV Carbon, 31.8, zero rise
Stem Bontrager Pro, 31.8mm, 7 degree
Brakes SRAM Level Ultimate carbon hydraulic disc
Pedals Not included
Saddle Bontrager Montrose Pro, carbon rails
Seat Post Bontrager XXX, OCLV Carbon, 31.6mm, zero offset

* Subject to change without notice.

Part Numbers

Option UPC MPN
Gloss Purple Phaze/Matte Trek Black / 17.5-inch / 29-inch 601479985579 568687
Gloss Purple Phaze/Matte Trek Black / 18.5-inch / 29-inch 601479985586 568688
Gloss Purple Phaze/Matte Trek Black / 19.5-inch / 29-inch 601479985593 568689
Gloss Purple Phaze/Matte Trek Black / 21.5-inch / 29-inch 601479985609 568690
Matte Carbon Smoke / 15.5-inch / 27.5-inch 601479889181 568651
Matte Carbon Smoke / 17.5-inch / 29-inch 601479901104 568672
Matte Carbon Smoke / 18.5-inch / 29-inch 601479901111 568673
Matte Carbon Smoke / 19.5-inch / 29-inch 601479901128 568674
Matte Carbon Smoke / 21.5-inch / 29-inch 601479901135 568675
Radioactive Orange/Trek Black / 17.5-inch / 29-inch 601479985524 568682
Radioactive Orange/Trek Black / 18.5-inch / 29-inch 601479985531 568683
Radioactive Orange/Trek Black / 19.5-inch / 29-inch 601479985548 568684
Radioactive Orange/Trek Black / 21.5-inch / 29-inch 601479985555 568685
Viper Red/Trek White / 17.5-inch / 29-inch 601479985470 568677
Viper Red/Trek White / 18.5-inch / 29-inch 601479985487 568678
Viper Red/Trek White / 19.5-inch / 29-inch 601479985494 568679
Viper Red/Trek White / 21.5-inch / 29-inch 601479985500 568680