2021 Trek Top Fuel 9.9 XTR

The 2021 Trek Top Fuel 9.9 XTR is a 29″ carbon frame full suspension trail bike with ultra high-end components.

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2021 Trek Top Fuel 9.9 XTR
  • MSRP $8,499
  • Weight 24.2 lbs / 11.0 kg
  • Suspension Full
  • Front Travel 120mm
  • Frame Carbon
  • Fork Fox Factory Float 34
  • Wheels 29″ Carbon
  • Drivetrain 1 × 12
  • Groupset XTR
  • Brakes Hydraulic Disc
  • Seatpost Dropper post

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Gearing

1 × 12 — 12 speed

2021 Trek Top Fuel 9.9 XTR
28 mph
Similar Bikes
26 mph

The Top Fuel 9.9 XTR is geared about the same as similar bikes for riding up hills.

Similar bikes won‘t keep up with the Top Fuel 9.9 XTR while riding downhill or sprinting.


Estimated Spec Level

Estimated spec level of the Top Fuel 9.9 XTR 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$2,000$4,000$6,000$8,000
This bike
Other trail bikes

Reviews

Geometry

Specs
Build
ForkFox Factory 34 Step-Cast, Float EVOL air spring, FIT4 2-position damper, dual remote lockout, tapered steerer, 44mm offset, Kashima Coat, Boost110, 15mm Kabolt axle, 120mm travel
Rear ShockFox Factory Float, 2-position DPS damper, Kashima Coat, 190x45mm
Bottom BracketShimano MT500, 92mm, PressFit
HeadsetKnock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom
StemBontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 70mm length
HandlebarBontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
SaddleBontrager Montrose Pro, 7x10mm carbon rails, 138mm width
SeatpostBontrager Line Elite Dropper, 170mm travel, internal routing, 31.6mm, 480mm length
GripsBontrager XR Trail Elite, alloy lock-on
Groupset
Rear DerailleurShimano XTR M9100, Shadow Plus, long cage, 51T max cog
CrankShimano XTR M9120, 32T alloy ring, Boost (52mm chainline), 175mm length
ShiftersShimano XTR M9100, 12 speed
CassetteShimano XTR M9100, 10-51, 12 speed
ChainShimano XTR M9100, 12 speed
BrakesShimano XTR M9100 hydraulic disc
Wheels
RimsBontrager Kovee Pro 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle
TiresBontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''
Disk RotorsShimano RT86, 180mm, 6-bolt
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