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  • Top Fuel 9.8 XT
NEW 2020

Top Fuel 9.8 XT

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$5,499.99 - $5,999.99 Model 31063

Top Fuel 9.8 is a high-performance full suspension mountain bike for endurance racers and riders who don't settle for one style of riding. It combines the best qualities of XC and trail bikes for an unbelievably fun, efficient, and capable rig. It's fast on flow, shreds big singletrack, and conquers endurance events. The 9.8 is built with an OCLV Mountain Carbon frame and across-the-board parts upgrades, including a 120mm FOX Performance 34 Step-Cast fork, Shimano XT drivetrain, and carbon wheels and bars.
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It's right for you if...

You want an efficient, capable, short-travel trail bike that excels at endurance and stage racing and can handle rough trails and even XC races. You appreciate the performance advantage of carbon and want a superlight bike with race-level components and suspension.

The tech you get

A full OCLV Mountain Carbon frame, upgraded 120mm Fox Performance 34 Step-Cast Float fork with GRIP damper, 115mm of rear travel with a FOX Performance Float shock, and a 1x12 Shimano XT drivetrain. Plus, wide carbon Bontrager Kovee Elite 30 wheels with a 54-tooth Rapid Drive hub for fast engagement, TwistLoc dual remote suspension lockout, Bontrager Line Elite Dropper, Bontrager Line Pro OCLV Carbon handlebar, and upgraded Shimano SLX brakes.

The final word

Top Fuel 9.8 is an efficient, capable, and ridiculously fun short-travel carbon trail bike with the performance boost of upgraded parts like the drivetrain, fork, and brakes. It's built to rip technical terrain and descents, speed through flow sections, and withstand the beating endurance races dole out.

The Walkthrough

favorite_borderWhy you'll love it

  1. This bike wants to go fast—it's built with no-nonsense, high-performance parts
  2. You get a Straight Shot down tube for extra stiffness in the rough and Knock Block frame defense to protect against spinning bars and fork crowns
  3. TwistLoc simultaneously locks out front and rear shocks for climbs and sprints with the simple Grip Shift-like motion
  4. Wider Kovee Elite 30 wheels provide better tire support so you can run lower pressure and get more traction
  5. This short-travel trail bike gives you a suspension setup that’s capable in several MTB disciplines, and especially suited to endurance events

"Racing blood, trail spirit"

"It's devilishly quick, accelerates in a way that makes it seem like my legs actually produce real power. It's stable, planted, and it tracks like it's supposed to. Endurance athletes will be able to remain seated over more terrain, saving precious energy over the long haul, while XC pinners will hook up better on steep technical climbs."

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"Super light and fast as hell"

"The new Top Fuel might not be a pure XC-race bike anymore, but it's still precise and very fast. Its new trail orientation makes it a great choice for a rider who wants a fast and light bike with most of the the efficiency of a cross-country race bike, but with bit more versatility and playfulness."

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"From XC whippet to all-round shredder"

"Smash down on the cranks and it leaps forward like a bullet from a gun, both uphill and downhill. if you enjoy the simple pleasure of crushing climbs and making the most of every descent, the Trek Top Fuel is your passport to a world of fun."

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Features

Will my bike have a curved top tube?

Smaller frames (S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.

Active Braking Pivot

Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

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Straight Shot w/Knock Block

Trek's Straight Shot frame design optimizes the stiffness-to-weight ratio for a more responsive ride. You'll be able to push harder and stay more planted on your line when the going gets rough.

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Suspension Calculator

This suspension calculator will help you optimize your suspension settings for your riding weight. Simply follow the steps to find your best set up.

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Carbon Care Wheel Loyalty Program

Every set of Bontrager carbon wheels is backed by the Carbon Care Wheel Loyalty Program. In the unlikely event that you damage your Bontrager carbon wheels within the first two years of ownership, we’ll repair or replace them for free.

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Complete Tubeless System

Tubeless Ready rims and tires make it easy to ditch the tubes so you get better traction, fewer flats, and less weight. You're ready to roll right out of the box with the included TLR rim strips, valves, and sealant.

TwistLoc Dual Remote Lockout

TwistLoc simultaneously locks out front and rear shocks with a simple Grip Shift-like motion; and it leaves room for a dropper post lever.

Blendr stem

Bontrager stem technology lets you clip your gear directly to the stem for clean looks, maximum user friendliness.

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Control Freak Cable Management

The lightest, quietest, most versatile cable management system allows any combination of shift, brake, lockout, and dropper post lines to be routed through the frame for clean looks and the ultimate custom setup.

Specifications

*spec applies to all sizes unless otherwise noted

Frameset
Mainframe 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 Performance 34 Step-Cast, Float EVOL air spring, GRIP 2-position damper, dual remote, tapered steerer, 44mm offset, Boost110, 15mm bolt-on axle, 120mm travel
Shock Fox Performance Float, 2-position DPS damper, TwistLoc remote, tuned by Trek Suspension Lab, 190x45mm
Wheels
Front Wheel Bontrager Kovee Elite 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle
Rear Wheel Bontrager Kovee Elite 30 carbon, Tubeless Ready, 54T Rapid Drive, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle
Rear Skewer Bontrager Switch thru axle, removable lever
Tire Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''
Drivetrain
Shifter Shimano XT M8100, 12 speed
Rear Derailleur Shimano XT M8100, long cage, 51T max cog
*Crank Size: S
Shimano XT M8100, 32T alloy ring, Boost, 170mm length
Size: M, M/L, L, XL
Shimano XT M8100, 32T alloy ring, Boost, 175mm length
Bottom Bracket Shimano MT500, 92mm, PressFit
Cassette Shimano XT M8100, 10-51, 12 speed
Chain Shimano XT M8100, 12 speed
Components
Saddle Bontrager Montrose Elite, titanium rails, 138mm width
*Seatpost Size: S
Bontrager Line Elite Dropper, 100mm travel, internal routing, 31.6mm, 340mm length
Size: M, M/L
Bontrager Line Elite Dropper, 150mm travel, internal routing, 31.6mm, 440mm length
Size: L, XL
Bontrager Line Elite Dropper, 170mm travel, internal routing, 31.6mm, 480mm length
Handlebar Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
*Stem Size: S, M, M/L
Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 60mm length
Size: L, XL
Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 70mm length
Headset Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom
Brake Shimano SLX M7100 hydraulic disc
*Brake Rotor Size: S, M, M/L, L, XL
Shimano RT66, 6-bolt, 180mm
Size: S, M, M/L, L, XL
Shimano RT66, 6-bolt, 160mm




  • Weight

    WEIGHT
    M - 11.94 kg / 26.32 lbs (with TLR sealant, no tubes)
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
    • We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
    Bike and frame weights are based off Trek pre-production painted frames at time of publication. Weights may vary in final production.

    Sizing & fit

    The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local Trek retailer.

     

    Rider Height

    Inseam

    All measurements provided in cm unless otherwise noted.

    Frame size number Frame size letter Geometry position A — Seat tube B — Seat tube angle Effective seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
    15.5 S High 39.4 68.5° 75.5° 9.0 68.0° 56.3 34.3 3.0 43.4 4.4 10.3 111.7 73.0 41.0 59.0
    15.5 S Low 39.4 68.0° 75.0° 9.0 67.5° 56.4 33.7 3.6 43.5 4.4 10.7 111.7 72.5 40.5 59.4
    17.5 M High 41.9 68.5° 75.5° 9.0 68.0° 59.8 34.3 3.0 43.4 4.4 10.3 115.2 73.5 44.5 59.0
    17.5 M Low 41.9 68.0° 75.0° 9.0 67.5° 59.9 33.7 3.6 43.5 4.4 10.7 115.2 73.0 44.0 59.4
    18.5 ML High 44.5 68.5° 75.5° 9.0 68.0° 61.4 34.3 3.0 43.4 4.4 10.3 116.8 74.1 46.1 59.0
    18.5 ML Low 44.5 68.0° 75.0° 9.0 67.5° 61.5 33.7 3.6 43.5 4.4 10.7 116.8 73.5 45.6 59.4
    19.5 L High 47.0 68.5° 75.5° 10.0 68.0° 63.0 34.3 2.9 43.4 4.4 10.3 118.5 75.1 47.5 59.9
    19.5 L Low 47.0 68.0° 75.0° 10.0 67.5° 63.2 33.7 3.6 43.5 4.4 10.7 118.6 74.5 47.0 60.3
    21.5 XL High 52.1 68.5° 75.5° 11.0 68.0° 65.0 34.3 2.9 43.4 4.4 10.3 120.6 77.1 49.2 60.8
    21.5 XL Low 52.1 68.0° 75.0° 11.0 67.5° 65.1 33.7 3.6 43.5 4.4 10.7 120.7 76.5 48.7 61.2
    23.5 XXL High 57.0 68.5° 75.5° 12.0 68.0° 67.5 34.3 2.9 43.4 4.4 10.3 123.3 78.6 51.5 61.7
    23.5 XXL Low 57.0 68.0° 75.0° 12.0 67.5° 67.7 33.7 3.6 43.5 4.4 10.7 123.4 78.0 51.0 62.2

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