Top Fuel 9.9 is our top-of-the-line full suspension mountain bike for endurance racers and multi-discipline riders. This down-country rig is built with an OCLV Mountain Carbon frame and spec'd to the hilt with high-performance parts, including a Fox Factory 34 Step-Cast fork, a SRAM XX1 Eagle drivetrain, carbon wheels, and SRAM Level Ultimate brakes. Top Fuel 9.9 flies through singletrack and rips descents, but it really shines when pushed to its full potential during grueling endurance races.
It's right for you if...
You've set your sights on endurance racing, and want every lightweight and performance advantage. You're looking for an efficient yet trail-capable rig that's fast on flats, soaks up rough terrain, and keeps you going mile after brutal mile.
The tech you get
A full OCLV Mountain Carbon frame, top-of-the-line 120mm Fox Factory 34 Step-Cast Float fork with GRIP damper, 115mm of rear travel with a Fox Factory Float shock, and a 1x12 SRAM XX1 Eagle drivetrain. Plus, wide carbon Bontrager Kovee Elite 30 wheels with a 108-tooth Rapid Drive hub for instant engagement, TwistLoc dual remote suspension lockout, Bontrager Line Elite Dropper, Bontrager Kovee Pro OCLV Carbon handlebars, and SRAM Level Ultimate brakes with carbon levers.
The final word
The Top Fuel 9.9 is built for speed and capability on any terrain, but its efficient, short-travel design excels in endurance events. An OCLV Mountain Carbon frame, top-of-the-line suspension, and carbon components come together for a nimble and insanely fun ride at any distance.
Why you'll love it
- It’s the ultimate endurance race bike—light, capable, and trimmed with high-performance components
- Wider Kovee Pro 30 wheels provide better tire support so you can run lower pressure and get more traction
- TwistLoc simultaneously locks out front and rear shocks for climbs and sprints with the simple Grip Shift-like motion
- This short-travel trail bike gives you a suspension setup that’s capable in several MTB disciplines, and especially suited to endurance events
- Make it yours: it's fully customizable through Project One
|Frame||OCLV Mountain Carbon main frame & stays, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, magnesium rocker link, Mino Link, ABP, Boost148, 115mm travel|
|Fork||Fox Factory 34 Step-Cast, Float EVOL air spring, FIT4 2-position damper, TwistLoc remote, tapered steerer, 44mm offset , Kashima Coat, Boost110, 15mm Kabolt axle, 120mm travel|
|Headset||Knock Block Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom|
|Rear Shock||Fox Factory Float, 2-position DPS damper, TwistLoc remote, Kashima Coat, tuned by Trek Suspension Lab, 190x45mm|
|Rims/Wheels||Bontrager Kovee Pro 30 carbon, Tubeless Ready, 6-bolt|
|Tires||Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40"|
|Crankset||SRAM XX1 Eagle Carbon, DUB, 32T alloy ring, Boost, carbon|
|Bottom Bracket||SRAM DUB, 92mm, PressFit|
|Chain||SRAM XX1 Eagle, 12 speed|
|Rear Derailleur||SRAM XX1 Eagle|
|Cassette/Rear Cogs||SRAM XG-1295 Eagle, 10-50, 12 speed|
|Shifters||SRAM XX1 Eagle, 12 speed|
|Handlebars||Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise|
|Stem||Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree|
|Brakes||SRAM Level Ultimate hydraulic disc, carbon levers, 180mm front rotor, 160mm rear rotor|
|Saddle||Bontrager Montrose Elite, titanium rails|
|Seat Post||Bontrager Line Elite Dropper, internal routing, 31.6mm|
* Subject to change without notice.
|Matte Carbon/Gloss Trek Black / Small||601842112021||585045||TOP38818788K|
|Matte Carbon/Gloss Trek Black / Medium||601842111949||585046||TOP38486751K|
|Matte Carbon/Gloss Trek Black / Medium-Large||601842112038||585047||TOP39308558K|
|Trek Black to Teal Fade / Medium||601842112045||585052||TOP32477174E|
|Trek Black to Teal Fade / Medium-Large||601842111970||585053||TOP33795877E|
|Trek Black to Teal Fade / Large||601842111932||585054||TOP32405424E|