2021 Trek
Top Fuel 9.9 XX1 AXS
A 29″ carbon frame full suspension trail bike with ultra high-end components.
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Manufacturer Price
$10,499| Weight | 24.4 lbs |
|---|---|
| Frame | Carbon |
| Suspension | Full, 115 / 120mm |
| Fork | RockShox SID Ultimate |
| Shock | RockShox SIDLuxe Ultimate |
| Wheels | 29″ Carbon |
| Drivetrain | 1 × 12 Electronic |
| Groupset | XX1 Eagle AXS, X01 Eagle AXS |
| Brakes | Hydraulic Disc |
| Seatpost | Dropper |
For This Bike
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full Top Fuel model range
View Comparison
Mar 2022 · Peter Walker
In our big 2022 downcountry group test, we pitted the Trek Top Fuel 9.9 XX1 AXS against 5 of the hottest bikes of the year. Read the full review to find out what it’s capable of and how it stacks up against the competition. Hit the link for the full review and a list with all other bikes in test.
Freedom of movement downhill
Firm and efficient rear suspension generates plenty of traction
Intuitive handling
Practical detail solutions and clean look
Very wide handlebars
Mar 2022 · Guy Kesteven
Trek’s Top Fuel delivers superlative short-travel suspension performance but it’s definitely a trail bike not an XC bike
Infectiously agile and playful vibe
Superlative suspension feel
Seriously tight tracking frame
Trail tough kit
Internal storage
Too heavy for XC racing
Simple fork damper
Tight internal storage access
Yawning gap between this and the Supercaliber
Dec 2021 · Will Soffe
Impressively playful characteristics, progressive geometry and solid build, despite lacking the outright pace of XC-derived competitors
Effective suspension gives suppleness and support
Confidence-inspiring geometry beyond XC-derived counterparts
A riotous blend of capability and playfulness
The robust frame means it’s heavier than its rivals
A flexy fork is the only weak spot in a bullet-proof build
Dec 2021 · Henry Quinney
For a bike that is so capable on the descents, though, the Top Fuel still packs a mighty punch when it comes to gaining elevation..
Great suspension performance
Frame storage
Strong climbing performance
Knockblock isn't as well executed as other brand's versions
Works well when pushing hard, but might not be the most comfortable for all
Oct 2021 · Danny Milner
New Trek Top Fuel 8 is a short travel - 120mm travel front and rear - down-country trail bike with internal frame storage for both alloy and carbon models.
Sublime suspension, playful handling, fantastic size range, internal storage
Not particularly light for the intended use, inconsistent Shimano brakes on our test bike
Oct 2021
The Trek Top Fuel has been overhauled for 2022, receiving an all-new frame with integrated storage, plus key updates to the suspension design and geometry. So how does it ride on the trail? And will everyone be pleased with all the changes? Read on for our Trek Top Fuel review.
Brilliant trail-ripping geometry
Active and supportive suspension
Masses of cornering grip & stability
Refined and practical frame design
Downtube storage is a welcome addition
Dropper post is sluggish
Wheels are solid but quite heavy
Carbon bars are harsh
Heavier than many of its competitors
| Fork | RockShox SID Ultimate, DebonAir spring, Charger Race Day damper, remote lockout, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel Travel: 120mm Spring Type: Air |
|---|---|
| Shock | RockShox SID Luxe Ultimate, DebonAir spring, Ultimate RL damper, 190 x 45 mm Travel: 115mm Spring Type: Air |
| Bottom Bracket | SRAM DUB, 92 mm, PressFit |
| Headset | Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom |
| Stem | Size: S, M, M/L, Bontrager Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 13-degree, 60 mm length; Size: L, XL, Bontrager Kovee Pro, 35 mm, Knock Block, Blendr-compatible, 13-degree, 70 mm length |
| Handlebar | Bontrager Line Pro, OCLV Carbon, 35 mm, 15 mm rise, 750 mm width |
| Saddle | Bontrager Arvada, austenite rails, 138 mm width |
| Seatpost | Size: S, RockShox Reverb AXS, 100 mm travel, wireless, 31.6 mm, 340 mm length; Size: M, M/L, RockShox Reverb AXS, 150 mm travel, wireless, 31.6 mm, 440 mm length; Size: L, XL, RockShox Reverb AXS, 170mm travel, wireless, 31.6 mm, 480 mm length Type: Dropper |
| Rear Derailleur | SRAM XX1 Eagle AXS |
|---|---|
| Crank | Size: S, SRAM XX1 Eagle AXS, DUB, 32T alloy ring, Boost, 170 mm length; Size: M, M/L, L, XL, SRAM XX1 Eagle AXS, DUB, 32T alloy ring, Boost, 175 mm length |
| Shifters | Size: S, M, M/L, L, XL, SRAM Eagle AXS, wireless, 12-speed; Size: S, M, M/L, L, XL, 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 Type: Hydraulic Disc |
| Rims | Front: Bontrager Kovee Pro 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, Rear: Bontrager Kovee Pro 30 carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12 mm thru axle |
|---|---|
| Tires | Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29 x 2.40" |
| Disc Rotors | Size: S, M, M/L, L, XL, SRAM CenterLine, 6-bolt, round-edge, 160 mm; Size: S, M, M/L, L, XL, SRAM CentreLine, 6-bolt, round edge, 180 mm |
Last updated July 26
Not listed for 289 days