Trek

2021 Trek Top Fuel 9.8 GX

Previous used estimate

$2,733 - $2,812

Actual value depends on condition, size, and local demand.

2021 Trek Top Fuel 9.8 GX

Value Guide market data · 2021 Trek Top Fuel 9.8 GX

12-month projected trend

12%

Direction and magnitude, not judgment

vs. category average

3%

Drops faster than category avg

Price over time - 2021 Trek Top Fuel 9.8 GX

$6.0k$3.5k$1.0kMSRPMSRPYr 1Yr 2Yr 3Yr 4Yr 5Yr 6Yr 7Yr 7Yr 8Yr 9Yr 10Yr 11Yr 12Yr 13Yr 14Yr 14Yr 15Yr 16Yr 17Yr 18Yr 19Yr 20Yr 20

Values based on actual sales data. Enter your bike's specifics to get a precise valuation.

All Top Fuel model years

Overview

About this bike

Top Fuel 9.8 is a full suspension carbon mountain bike for riders who don't settle. Not for parts nor for one style of riding. It combines a high-end parts package with a low-weight carbon frame for one unbelievably fun rig that's fast on flow and still fun to ride on techy singletrack. It's right for you if... You’re looking for a do-it-all full suspension mountain bike that's efficient and fast, but doesn't shy away from some bigger stuff. You want the added stiffness and weight savings of a carbon frame, but don't mind saving some money on the parts. The tech you get A light and stiff full carbon frame, 120mm RockShox SID Select+ fork, 115mm of rear travel with a RockShox SID Luxe Ultimate shock, and a new SRAM GX Eagle drivetrain with an extra-low 52-tooth climbing gear. Plus, wide carbon Bontrager Kovee Elite 30 wheels with a 54-tooth Rapid Drive hub for fast engagement, Bontrager Line Elite Dropper, and carbon handlebars. The final word Top Fuel 9.8 is a ridiculously fun carbon down-country bike with upgraded parts that give you noticeable benefits on the trail, like more speed from the carbon wheels and more grip from the ultra-smooth suspension. Why you'll love it - This bike wants to go fast—it's built with no-nonsense, high-performance parts - You get a Straight Shot downtube for extra-stiff, responsive handling without added weight, and a Knock Block headset that protects against spinning bars and fork crowns - Bontrager DropLock's shifter-style lever lets you easily lock out both front and rear shocks at the same time for added sprinting or climbing efficiently. Plus, it controls your dropper post too - Wider Kovee Elite 30 wheels provide better tire support so you can run lower pressure and get more traction - This short-travel bike has a killer suspension setup reminiscent of the all-mighty mullet—it's both efficient and ready to party

Specifications

Subtype
Cross Country
Category
Mountain
Component Fork
RockShox SID Select+, DebonAir spring, Charger 2 RL damper, tapered steerer, 44mm offset, 15mm Maxle Stealth, 120mm travel
Component Size
Small, Medium, Medium/Large, Large, X-Large, XX-Large
Component Stem
Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree
Product Family
Top Fuel
Component Axles
Front: 110 x 15 thru-axle Rear: 148 x 12mm thru-axle
Component Chain
SRAM GX Eagle, 12 speed
Component Color
Carbon Blue Smoke/Radioactive Coral, Matte Raw Carbon/Voodoo Trek Black, Gloss Red/Matte Carbon Smoke
Component 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
Component Brakes
SRAM G2 RS 4-piston hydraulic disc, w/SRAM CenterLine, 6-bolt, round-edge, 180/160mm rotors
Component Saddle
Bontrager Montrose Elite, titanium rails, 138mm width
Component Cassette
SRAM Eagle XG-1275, 10-52, 12 speed
Component Crankset
SRAM GX 7K Eagle, DUB, Boost (52mm chainline)
Component Shifters
SRAM GX Eagle, 12 speed
Component Handlebar
Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
Component Seat Post
Bontrager Line Elite Dropper, internal routing, 31.6mm, Small: 100mm travel; Medium – Medium/Large: 150mm travel; Large – XX-Large: 170mm travel
Component Chainrings
32T alloy ring
Component Front Tire
Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''
Component Rear Shock
RockShox SID Luxe Ultimate, DebonAir spring, Ultimate RL damper, 190x45mm
Component Bottom Bracket
SRAM DUB, 92mm, PressFit
Component Rear Derailleur
SRAM GX Eagle
Rear Shock
RockShox SID Luxe Ultimate, DebonAir spring, Ultimate RL damper, 190x45mm
Crankset
SRAM GX 7K Eagle, DUB, Boost (52mm chainline)
Bottom Bracket
SRAM DUB, 92mm, PressFit
Chain
SRAM GX Eagle, 12 speed
Saddle
Bontrager Montrose Elite, titanium rails, 138mm width
Handlebar
Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
Rear Derailleur
SRAM GX Eagle
Stem
Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree
Axles
Front: 110 x 15 thru-axle Rear: 148 x 12mm thru-axle
Brakes
SRAM G2 RS 4-piston hydraulic disc, w/SRAM CenterLine, 6-bolt, round-edge, 180/160mm rotors
Cassette
SRAM Eagle XG-1275, 10-52, 12 speed
Chainrings
32T alloy ring
Fork
RockShox SID Select+, DebonAir spring, Charger 2 RL damper, tapered steerer, 44mm offset, 15mm Maxle Stealth, 120mm travel
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
Seat Post
Bontrager Line Elite Dropper, internal routing, 31.6mm, Small: 100mm travel; Medium – Medium/Large: 150mm travel; Large – XX-Large: 170mm travel
Shifters
SRAM GX Eagle, 12 speed
Color
Gloss Red/Matte Carbon Smoke
Size
XX-Large
Front Tire
Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''

What to check when buying used

Inspection

Frame condition

Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.

Inspection

Drivetrain wear

Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.

Inspection

Service history

Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.

Inspection

Suspension service

Confirm fork and rear shock service intervals and check pivot bearings for play.

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