Trek Top Fuel 9.9 XTR Gen 4
Details
Top Fuel 9.9 XTR Gen 4 is a lightweight carbon trail bike built to rip up climbs and stay playful on descents. It gives you the confidence you want through roots and rocks thanks to a 120mm/130mm RockShox suspension package with a Pike Ultimate fork and Deluxe Ultimate shock. Plus, you get clean shifts from a premium 12-speed Shimano XTR drivetrain.
IT'S RIGHT FOR YOU IF…
You're after a carbon trail bike that keeps weight to a minimum without compromising on capability. You like to ride everything – long alpine climbs, rooty aspen slalom, fast XC singletrack, and you want a bike that can keep up on the ups and hold its own on the downs. Keeping things light with a carbon frame is important to you, and you want the light yet precise shifting of a Shimano XTR drivetrain.
THE TECH YOU GET
An OCLV Mountain Carbon frame with a 4-way Mino Link lower shock mount for tweaking geometry and suspension leverage rate. A 130mm RockShox Pike Ultimate fork with DebonAir spring, and Charger 3.1 RC2 damper, plus 120mm of rear travel from a RockShox Deluxe Ultimate RCT shock. A Shimano XTR 12-speed drivetrain, Shimano XTR M9100 hydraulic brakes, Bontrager Line dropper post, and tubeless-ready Bontrager Line Pro 30 wheels.
THE FINAL WORD
If you're after a light carbon trail bike that balances a playful and capable ride, reach for Top Fuel 9.8 XTR Gen 4. Its ultra-lightweight frame pairs with a 4-way Mino Link lower suspension mount for taking control of your geometry and suspension feel. Plus, you get clean shifts from a Shimano XTR drivetrain and a sweet RockShox suspension package.
WHY YOU'LL LOVE IT
- Top Fuel Gen 4 delivers with an intensely lightweight build, improved in-frame storage, and more adjustability for all kinds of rides and riders
- With 120mm rear and 130mm front RockShox suspension, it delivers a well-balanced ride that stays efficient on the ups and playful on descents
- The 4-way Mino Link makes it easy to adjust your geometry or leverage rate for how and where you want to ride
- In-frame storage with an improved BITS bag system makes it easy to stash tools, tubes, and snacks
- It's more upgrade-ready than ever, with room for bigger 140mm forks and longer-stroke shocks for up to 130mm of rear travel, plus room for extra-long dropper posts
Wheel Size
Small: 27.5-inch
Medium - XX-Large: 29-inch
| Frame size | Small | Small | Medium | Medium | Large | Large | X-Large | X-Large |
|---|---|---|---|---|---|---|---|---|
| Geometry position | High | Low | High | Low | High | Low | High | Low |
| Wheel size | 27.5" | 27.5" | 29" | 29" | 29" | 29" | 29" | 29" |
| Seat tube (cm) | 36 | 36 | 41 | 41 | 42 | 42 | 43.5 | 43.5 |
| Seat tube angle | 69.5° | 69.0° | 70.5° | 70.0° | 70.5° | 70.0° | 70.5° | 70.0° |
| Effective seat tube angle | 76.5° | 76.0° | 77.3° | 76.9° | 76.6° | 76.2° | 76.3° | 75.9° |
| Head tube length (cm) | 10.5 | 10.5 | 10.5 | 10.5 | 11 | 11 | 11.5 | 11.5 |
| Head angle | 65.9° | 65.5° | 65.9° | 65.5° | 65.9° | 65.5° | 65.9° | 65.5° |
| Effective top tube (cm) | 55.8 | 55.9 | 58.7 | 58.8 | 61.1 | 61.2 | 63 | 63.1 |
| Bottom bracket height (cm) | 1 | 1.6 | 2.6 | 3.2 | 2.6 | 3.2 | 2.6 | 3.2 |
| Bottom bracket drop (cm) | 43.4 | 43.5 | 43.4 | 43.5 | 43.9 | 44 | 43.9 | 44 |
| Chainstay length (cm) | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 |
| Offset (cm) | 11.1 | 11.5 | 12.1 | 12.5 | 12.1 | 12.5 | 12.1 | 12.5 |
| Trail (cm) | 115 | 115.1 | 118.8 | 118.8 | 121 | 121 | 122.7 | 122.7 |
| Wheelbase (cm) | 70.5 | 70 | 75.5 | 75 | 75.5 | 75 | 76 | 75.5 |
| Standover (cm) | 42.2 | 41.7 | 45.2 | 44.7 | 46.7 | 46.2 | 48.2 | 47.7 |
| Frame reach (cm) | 56.6 | 57 | 59.9 | 60.3 | 60.4 | 60.7 | 60.8 | 61.2 |
Specs
| Frame | OCLV Mountain Carbon, internal storage, tapered head tube, internal guided routing, downtube guard, alloy rocker link, 4-way Mino Link, ABP, Boost148, 120mm travel |
|---|---|
| Fork | RockShox Pike Ultimate, DebonAir spring, Charger 3.1 RC2 damper, 44mm offset, Boost110, Maxle Stealth, 130mm travel |
| Rear Shock | RockShox Deluxe Ultimate RCT, 185mm x 50mm |
| Wheels |
Front (Small): Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 27.5'' Front: Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29'' ,br> Rear (Small): Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12mm thru axle, 27.5'' Rear: Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12mm thru axle, 29'' |
| Tires |
Size S: Bontrager Gunnison RSL XT, Tubeless Ready, triple compound, aramid bead, 120 tpi, 27.5x2.40'' Bontrager Montrose RSL XT, Tubeless Ready, triple compound, aramid bead, 120 tpi, 29x2.40'' |
| Brakes | Shimano XTR M9100 hydraulic disc |
| Crankset | E*thirteen TRS Race Carbon, 30T, 55mm chainline, 170mm length |
| Bottom Bracket | E*thirteen BB20-P, BSA threaded, 73mm width |
| Shifters | Shimano XTR M9100, 12 speed |
| Cassette/Freewheel | Shimano XTR M9101, 10-51, 12 speed |
| Rear Derailleur | Shimano XTR M9100, Shadow Plus, long cage, 51T max cog |
| Rotors | Shimano RT86, 6-bolt, 180mm |
| Handlebars | Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5mm handlebar rise, 820mm width, 0 degree stem rise, 45mm stem length |
| Chain | Shimano Dura-Ace/XTR M9100, 12 speed |
| Tape/Grips | Bontrager XR Trail Elite, nylon lock-on |
| Seatpost | Bontrager Line Dropper, 170mm travel, MaxFlow, internal routing, 34.9mm, 450mm length |
| Saddle | Verse Short Comp, steel rails, 145mm width |
| Accessories & Extras | Bontrager BITS Internal Frame Storage Bag |
* Subject to change without notice.
Part Numbers
| Option | UPC | MPN |
|---|---|---|
| Matte Dark Web / Medium/Large / 29-inch | 197216144977 | 5331625 |