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Trek Top Fuel 9.8 GX

Trek Top Fuel 9.8 GX
  • Color: Carbon Blue Smoke/Radioactive Coral
  • Color: Matte Raw Carbon/Voodoo Trek Black
  • Color: Gloss Red/Matte Carbon Smoke
$6,000.00 - $6,500.00
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The Top Fuel family brings World Cup performance to you, making every inch of trail go by that much faster.

When Trek revived the Top Fuel moniker, it knew it had to keep the incredible features from the Fuel EX line that make it such a world-beater in trail bikes. The Active Braking Pivot -or ABP- rear suspension geometry makes the Top Fuel a true standout in full-suspension cross country mountain bikes. Instant reaction to changing surfaces and terrain, as well as zero shock compression during hard braking make the Top Fuel a winner in the arena of cross country race machines. Adding all that race-bred tech to an OCLV Mountain carbon fiber frame elevates the Top Fuel 9.8 GX beyond its competitors, ensuring feather-light weight and incredible torsional strength. Trek's XC frame geometry has been proven time and again during cross-country races around the world, and that geometry is found on the Top Fuel as well. A tapered head tube adds an extra dash of razor-sharpness to the Top Fuel's handling, while a press-fit PF92 bottom bracket anchors the SRAM crankset for flex-free power delivery. Control Freak internal cable routing keeps the Top Fuel 9.8 GX looking clean and sleek with no rattles, while carbon armor under the down tube resists flying gravel and debris. The Top Fuel's overall geometry can be tweaked slightly by rotating the Mino Link suspension pivot at the top of the rear stays. Want a more relaxed geometry? simply rotate the Mino Link to get a slacker head angle for a more stable feel.

Out back, the Top Fuel 9.8 GX is equipped with an air-adjustable RockShox SID Luxe Ultimate shock, helping to keep the bike anchored to rough singletrack. From small-bump compliance to hard landings, the SID Lux Ultimate rear shock responds to everything with just the right amount of response, keeping you in control with 115mm of travel. Up front, an air-adjustable RockShox SID Select+ suspension fork helps tackle rock gardens and root "fun houses" with 120mm of travel. A meaty 15mm Maxle Stealth thru-axle keeps the front wheel where you point it, while a 2-position damper adds even more control, depending on rider preference.

SRAM has been at the forefront of mountain bike component tech, and their latest 12-speed SRAM GX Eagle components are no exception. A SRAM Eagle GX shifter and Eagle GX Roller Bearing Clutch rear derailleur operate with lightning-quickness, even under hard pedaling loads. A 12-speed SRAM 10-52T cassette and carbon fiber SRAM Stylo Eagle crankset with a direct-mount 32T chainring offers a massive gearing range for challenging trails and climbs. A SRAM GX Eagle chain is there to make sure shifting and power transfer is all top-notch. Bontrager's tubeless-ready Kovee Elite 30 carbon fiber wheels are shod with tubeless-ready XR3 Team Issue tires, bringing bags of grip and easy acceleration to the Top Fuel 9.8 GX. The Kovee Elite wheelset features Boost110/148 hubs, adding wider flanges for improved lateral rigidity in the wheels. Helping to keep speed reigned in is a set of SRAM G2 RS 4-piston hydraulic disc brakes, delivering confident stopping power in all conditions, rain or shine (or mud). A Ti-railed Bontrager Montrose Elite saddle sits atop an alloy Bontrager Line Elite dropper seatpost. A bar-mounted lever gets the saddle out of the way with a single push. An alloy Bontrager Kovee Pro stem and Line Pro OCLV carbon fiber handlebar complete this race-ready machine.

Dropper posts

A dropper seatpost allows you to quickly lower and raise your seat to give you an ideal riding position. Dropping your seat creates a lower center of gravity for better control and maneuverability on steep descents, while raising it puts you at normal riding height for efficient pedaling.

Construction can include either hydraulic- or cable-actuated systems and the post’s travel can either be infinitely adjustable or stopped at set intervals, depending on the model.

Dropper seatposts come in standard lengths and diameters and vary by the amount of travel.

Will my bike have a curved top tube?

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.


Frame OCLV Mountain Carbon main frame & stays, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, magnesium rocker link, Mino Link, ABP, 115mm travel
Fork RockShox SID Select+, DebonAir spring, Charger 2 RL damper, tapered steerer, 44mm offset, 15mm Maxle Stealth, 120mm travel
Rear Shock RockShox SID Luxe Ultimate, DebonAir spring, Ultimate RL damper, 190x45mm
Axles Front: 110 x 15 thru-axle
Rear: 148 x 12mm thru-axle
Rims/Wheels Bontrager Kovee Elite 30 carbon, Tubeless Ready, 54T Rapid Drive, 6-bolt, SRAM XD driver
Spokes Stainless steel
Tires Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''
Crankset SRAM GX 7K Eagle, DUB, Boost (52mm chainline)
Chainrings 32T alloy ring
Bottom Bracket SRAM DUB, 92mm, PressFit
Chain SRAM GX Eagle, 12 speed
Rear Derailleur SRAM GX Eagle
Cassette/Rear Cogs SRAM Eagle XG-1275, 10-52T, 12 speed
Shifters SRAM GX Eagle, 12 speed
Handlebars Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
Stem Bontrager Kovee Pro alloy, 35mm, Knock Block, Blendr compatible, 13 degree
Brake Levers SRAM G2 RS hydraulic
Brakes SRAM G2 RS 4-piston hydraulic disc, w/SRAM CenterLine, 6-bolt, round-edge, 180/160mm rotors
Saddle Bontrager Montrose Elite, titanium rails, 138mm width
Seat Post Bontrager Line Elite Dropper, internal routing, 31.6mm, Small: 100mm travel; Medium – Medium/Large: 150mm travel; Large – XX-Large: 170mm travel

* Subject to change without notice.