2021 Trek Fuel EX 9.8 XT

The 2021 Trek Fuel EX 9.8 XT is a 27.5″ / 29″ carbon frame full suspension trail bike with high-end components.

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2021 Trek Fuel EX 9.8 XT
  • MSRP $5,999
  • Weight 28.9 lbs / 13.1 kg
  • Suspension Full
  • Front Travel 140mm
  • Frame Carbon
  • Fork Fox Performance Float 36
  • Wheels 27.5″ / 29″ Carbon
  • Drivetrain 1 × 12
  • Groupset XT
  • Brakes Hydraulic Disc
  • Seatpost Dropper post

Where to Buy


1 × 12 — 12 speed

2021 Trek Fuel EX 9.8 XT
25 mph
Similar Bikes
26 mph

The Fuel EX 9.8 XT is easier to ride up hills than similar bikes.

The Fuel EX 9.8 XT won‘t keep up with similar bikes while riding downhill or sprinting.

Estimated Spec Level

Estimated spec level of the Fuel EX 9.8 XT compared to other trail bikes. 99 Spokes analyzes the build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more to estimate the overall spec level of each bike.

Learn more

est. spec level →$0$1,000$2,000$3,000$4,000$5,000$6,000
This bike
Other trail bikes



ForkFox Performance 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel
Rear ShockFox Performance Float EVOL, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 210x55mm
Bottom BracketShimano MT500, 92mm, PressFit
HeadsetKnock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom
StemBontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree, 45mm length
HandlebarBontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width
SaddleBontrager Arvada, austenite rails, 138mm width
SeatpostBontrager Line Elite Dropper, 170mm travel, internal routing, 31.6mm, 480mm length
GripsBontrager XR Trail Elite, alloy lock-on
Rear DerailleurShimano XT M8100, long cage, 51T max cog
CrankShimano XT M8100, 30T alloy ring, Boost (52mm chainline), 175mm length
ShiftersShimano XT M8100, 12 speed
CassetteShimano XT M8100, 10-51, 12 speed
ChainShimano XT M8100, 12 speed
BrakesShimano SLX M7120 4-piston hydraulic disc
RimsNEW Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle
TiresBontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60''
Disk RotorsShimano RT66, 203mm, 6-bolt
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2021 Trek Fuel EX 9.8 XT