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Trek Top Fuel 9.8 XT

Trek Top Fuel 9.8 XT
  • Color: Matte Raw Carbon
  • Color: Marigold to Red to Purple Abyss Fade
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Welcome to the new Top Fuel for 2022. More versatile, more travel, more fun!

The Top Fuel platform got a redesign for 2022, with an aim towards improving the bike's prowess on technical trails. A slightly longer top tube and slacker head angle gives the Top Fuel a more confident feel on technical descents and rough trail features. With the Top Fuel 9.8, Trek still uses their world-class OCLV Mountain carbon fiber in the frame and rear triangle, ensuring very light weight and high strength. Steep inclines and twisty singletrack remain the Top Fuel 9.8's playground.

Trek's proprietary Active Braking Pivot (or ABP) rear suspension has a unique design that isolates braking forces from the action of the rear suspension. The concentric rear pivot allows the shock to work smoothly in all conditions, from washboard hardpan to stair-step descents. The ABP suspension's lower front pivot is also in line with the top of the chainring, eliminating any wasted energy during hard pedaling. With rear suspension travel bumped up to 120mm, the Top Fuel 9.8 is more capable than ever. An air-adjustable RockShox Deluxe Ultimate RCT shock features adjustable rebound for perfect fine tuning for different trail conditions, riding styles and rider weights. The lower shock mount is also a reversible Mino Link. By flipping the Mino Link, the geometry of the Top Fuel 9.8 can be changed, depending on rider preferences and trail conditions. The rear shock works though an ultra-stiff magnesium rocker link that helps keep the rear suspension working smoothly.

The details found on every carbon fiber full suspension bike from Trek are still there.

-A tapered head tube that anchors the suspension fork, improving handling and front braking
-Oversized down tube with Internal Frame Storage and BITS tool roll
-Control Freak internal cable routing for rattle-free riding and easy cable servicing
-Downtube guard to deflect gravel spray off the front tire
-An updated Knock Block headset that prevents the handlebar from smashing the top tube

Up front, an air-adjustable RockShox SID Select+ suspension fork does handling duties. 120mm of travel matches the Top Fuel's rear suspension, while a 15mm thru-axle adds an extra dash of razor-sharpness to every technical trail.

Shimano's proven 12-speed Deore XT components make up the drivetrain of the Top Fuel 9.8. The 12-speed shifter, clutch-equipped rear derailleur, 30T single-ring crankset, 10-51T cassette and even the chain are Shimano XT components. The RapidFire shifter boasts a dual-action lever that shifts to a smaller cog with either a push or a pull. That massive cassette is a mixture of aluminum and steel assembled in a lightweight package and backed by a flex-resistant 1-piece spider. The 30T chainring is a direct-mount unit, keeping overall crankset weight low.

Bontrager's Line Elite 30 OCLV carbon fiber tubeless wheels make for brilliant rolling stock on the Top Fuel 9.8. A 29mm internal rim width offers a meaty platform for the bike's Bontrager XR 4 Team Issue 29x2.4" tires. The thru-axle rear hub sports a Rapid Drive 108 cassette that allows for much faster engagement when pedaling out of hairpins and uphill curves. Reigning in speed is the job of Shimano's Deore XT 4-piston hydraulic disc brakes. Yes, just like on a MotoGP bike, more pistons make for better braking performance.

What would a full-suspension mount bike be without a dropper post? The Top Fuel 9.8 is equipped with a Line Elite dropper post that gets the saddle out of the way with the push of the bar-mounted remote lever. A Bontrager Arvada saddle sits atop the dropper post, bringing a comfy perch to the bike. The Bontrager Line Pro OCLV carbon fiber handlebar has a 35mm clamp diameter, and is mated to an alloy Bontrager Line Pro Knock Block stem.

bike frame with labeled dimensions
Bike Sizes:
A. Reach 42cm 45cm 46.5cm 48cm 50cm
B. Stack 59.5cm 59.5cm 60cm 60.5cm 61.8cm
C. Standover 71.5cm 73.5cm 74cm 74.5cm 75.5cm
D. Effective Top Tube 56.8cm 59.8cm 61.5cm 63.1cm 65.4cm
E. Head Tube Angle 66.0° 66.0° 66.0° 66.0° 66.0°
F. Head Tube Length 10cm 10cm 10.5cm 11cm 12.5cm
G. Seat Tube Angle 70.0° 70.0° 70.0° 70.0° 70.0°
H. Seat Tube Length 39.5cm 42cm 43.5cm 45cm 50cm
I. Bottom Bracket Height 33.8cm 33.8cm 33.8cm 33.8cm 33.8cm
J. Bottom Bracket Drop 3.6cm 3.6cm 3.6cm 3.6cm 3.6cm
K. Fork Rake/Offset 4.4cm 4.4cm 4.4cm 4.4cm 4.4cm
L. Trail 11.8cm 11.8cm 11.8cm 11.8cm 11.8cm
M. Wheelbase 115.1cm 118.1cm 119.8cm 121.5cm 124.1cm
O. Chainstay Length 43.5cm 43.5cm 43.5cm 43.5cm 43.5cm
bike frame with labeled dimensions
Bike Sizes:
A. Reach 42.4cm 45.4cm 46.9cm 48.4cm 50.4cm
B. Stack 59.2cm 59.2cm 59.7cm 60.1cm 61.5cm
C. Standover 71.9cm 74cm 74.5cm 75cm 76cm
D. Effective Top Tube 56.7cm 59.7cm 61.4cm 63cm 65.3cm
E. Head Tube Angle 66.4° 66.4° 66.4° 66.4° 66.4°
F. Head Tube Length 10cm 10cm 10.5cm 11cm 12.5cm
G. Seat Tube Angle 70.4° 70.4° 70.4° 70.4° 70.4°
H. Seat Tube Length 39.5cm 42cm 43.5cm 45cm 50cm
I. Bottom Bracket Height 34.3cm 34.3cm 34.3cm 34.3cm 34.3cm
J. Bottom Bracket Drop 3.1cm 3.1cm 3.1cm 3.1cm 3.1cm
K. Fork Rake/Offset 4.4cm 4.4cm 4.4cm 4.4cm 4.4cm
L. Trail 11.5cm 11.5cm 11.5cm 11.5cm 11.5cm
M. Wheelbase 115cm 118cm 119.7cm 121.4cm 124cm
O. Chainstay Length 43.4cm 43.4cm 43.4cm 43.4cm 43.4cm


Frame OCLV Mountain Carbon, internal storage, tapered head tube, Knock Block 2.0, internal guided routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 120mm travel
Fork RockShox SID Select+, DebonAir spring, Charger 2 RL damper, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 120mm travel
Rear Shock RockShox Deluxe Ulitmate RCT, 185mm x 50mm
Wheels Front: NEW Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle
Rear: Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle
Rims OCLV Mountain Carbon, Tubeless Ready, 29mm internal
Hubs Alloy sealed bearing, Boost 110/148, Rapid Drive 108 free hub
Spokes Stainless steel, 14/15G butted
Axles 12mm thru-axle
Tires Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120tpi, 29 x 2.40
Bottom Bracket Shimano SM-BB52, 73mm, threaded external bearing
Crankset Shimano XT M8120, Boost (55mm chainline)
Chainrings 30T
Shifters Shimano XT M8100, 12 speed
Rear Derailleur Shimano XT M8100, long cage, 51T max cog
Cassette/Freewheel Shimano XT M8100, 10-51T, 12 speed
Chain Shimano XT M8100, 12 speed
Brakes Shimano XT M8120 4-piston hydraulic disc, flat-mount
Rotors Shimano RT76, 6-bolt
Brake Levers Shimano XT M8100, 2-finger
Handlebars Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise
Tape/Grips Bontrager XR Trail Elite, nylon lock-on
Stem Bontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree, 45mm length
Headset Knock Block 2.0 Integrated, 72-degree radius (includes infinite-radius chip), sealed cartridge bearing, 1-1/8" top, 1.5" bottom
Seatpost Bontrager Line Elite Dropper, MaxFlow, internal routing, 34.9mm
Saddle Bontrager Arvada, austenite rails, 138mm width
Pedals Sold separately
Accessories & Extras Bontrager BITS Internal Frame Storage Bag

* Subject to change without notice.