The 2021 Trek Top Fuel 9.9 XX1 AXS is a 29″ carbon frame full suspension trail bike with ultra high-end components.
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1 × 12 — 12 speed
The Top Fuel 9.9 XX1 AXS is geared about the same as similar bikes for riding up hills.
Similar bikes won‘t keep up with the Top Fuel 9.9 XX1 AXS while riding downhill or sprinting.
Estimated spec level of the Top Fuel 9.9 XX1 AXS 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.
|Fork||RockShox SID Ultimate, DebonAir spring, Charger Race Day damper, remote lockout, tapered steerer, 44mm offset, Boost110, 15mm Maxle Stealth, 120mm travel|
|Rear Shock||RockShox SID Luxe Ultimate, DebonAir spring, Ultimate RL damper, 190x45mm|
|Bottom Bracket||SRAM DUB, 92mm, PressFit|
|Headset||Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom|
|Stem||Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 70mm length|
|Handlebar||Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width|
|Saddle||Bontrager Arvada, austenite rails, 138mm width|
|Seatpost||RockShox Reverb AXS, 170mm travel, wireless, 31.6mm, 480mm length|
|Rear Derailleur||SRAM XX1 Eagle AXS|
|Crank||SRAM XX1 Eagle AXS, DUB, 32T alloy ring, Boost (52mm chainline), 175mm length|
|Shifters||SRAM Eagle AXS, wireless, 12-speed|
|Cassette||SRAM Eagle XG-1299, 10-52, 12 speed|
|Chain||SRAM XX1 Eagle, 12 speed|
|Brakes||SRAM G2 Ultimate hydraulic disc, carbon levers|
|Rims||Bontrager Kovee Pro 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle|
|Tires||Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''|
|Disk Rotors||SRAM CenterLine, 6-bolt, round-edge, 180mm|