Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2021 Trek Fuel EX 9.9 X01 AXS
Value Guide market data · 2021 Trek Fuel EX 9.9 X01 AXS
12-month trend
11%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2021 Trek Fuel EX 9.9 X01 AXS
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Fuel model years
2026$3,720 - $4,320▼ 62% vs. 2021
2025$10,230 - $11,880▲ 4% vs. 2021
2024$11,625 - $13,500▲ 18% vs. 2021
2023$13,020 - $15,120▲ 33% vs. 2021
2022$8,882 - $10,314▼ 9% vs. 20212021$9,812 - $11,394Currently viewing
2020$7,905 - $9,180▼ 19% vs. 2021
2019$7,254 - $8,424▼ 26% vs. 2021
2018$8,277 - $9,612▼ 16% vs. 2021
2017$7,812 - $9,072▼ 20% vs. 2021
2016$7,812 - $9,072▼ 20% vs. 2021
2015$8,789 - $10,206▼ 10% vs. 2021
2014$7,719 - $8,964▼ 21% vs. 2021
2013$7,812 - $9,072▼ 20% vs. 2021
2012$8,686 - $10,087▼ 11% vs. 2021
2011$7,319 - $8,500▼ 25% vs. 2021
2010$6,343 - $7,366▼ 35% vs. 2021
2009$6,650 - $7,722▼ 32% vs. 2021
2008$5,729 - $6,653▼ 42% vs. 2021
2007$1,581 - $1,836▼ 84% vs. 2021
2006$1,953 - $2,268▼ 80% vs. 2021
2005$2,353 - $2,732▼ 76% vs. 2021
2004$4,464 - $5,184▼ 55% vs. 2021
2003$4,092 - $4,752▼ 58% vs. 2021
2002$3,069 - $3,564▼ 69% vs. 2021
2001$2,744 - $3,186▼ 72% vs. 20212021 Fuel EX 9.9 X01 AXS lineup
Overview
About this bike
2021 Trek Fuel EX 9.9 X01 AXS value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame
- Aluminum / Alpha Platinum Aluminium, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130 mm travelBB Standard:BB86/BB92, Press FitTire Clearance:2.6"Color:Dark Aquatic / Trek Black
- Suspension
- Full, 130 / 140mm
- Fork
- Fox Rhythm Float 34 / Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 140 mm travelTravel:140mmSpring Type:Air
- Shock
- Fox / Size: XS, S, Fox Performance Float EVOL, 3-position RE:aktiv damper, tuned by Trek Suspension Lab, 210 mm x 52.5 mm; Size: S, M, ML, L, XL, XXL, Fox Performance Float EVOL, 3-position RE:aktiv damper, tuned by Trek Suspension Lab, 210 mm x 55 mmTravel:130mm
- Headset
- Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom
Drivetrain
- Drivetrain
- 1 × 12
- Groupset
- X1, GX Eagle
- Bottom Bracket
- SRAM DUB, 92 mm, PressFit
- Rear Derailleur
- SRAM GX Eagle
- Crank
- Size: XS, S, SRAM X1 Eagle, DUB, 30T steel ring, 52 mm chainline, 170 mm length; Size: M, ML, L, XL, XXL, SRAM X1 Eagle, DUB, 30T steel ring, 52 mm chainline, 175 mm length
- Shifters
- SRAM GX Eagle, 12-speed
- Cassette
- SRAM Eagle XG-1275, 10-52, 12-speed
- Chain
- SRAM GX Eagle, 12-speed
Brakes
- Brakes
- SRAM G2 R Hydraulic Disc / SRAM G2 R hydraulic discType:SRAM G2 R Hydraulic Disc
Cockpit
- Seatpost
- Dropper / Size: XS, S, Bontrager Line Dropper, 100 mm travel, internal routing, 31.6 mm, 345 mm length; Size: M, ML, L, XL, XXL, Bontrager Line Dropper, 150mm travel, internal routing, 31.6 mm, 440mm lengthType:Dropper
- Stem
- Size: XS, S, Bontrager Line, 35 mm, 0-degree, 40 mm length; Size: M, ML, L, XL, XXL, Bontrager Line, 35 mm, 0-degree, 50 mm length
- Handlebar
- Size: XS, S, Bontrager Line, alloy, 35 mm, 27.5 mm rise, 750 mm width; Size: M, ML, L, XL, XXL, Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width
- Saddle
- Bontrager Arvada, hollow chromoly rails, 138 mm width
- Grips
- Bontrager XR Trail Elite, nylon lock-on
Wheels & Tires
- Wheels
- 29″ Aluminum
- Rims
- Front: Size: XS, S, Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5"; Size: S, M, ML, L, XL, XXL, Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29", Rear: Size: XS, S, Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 27.5"; Size: S, M, ML, L, XL, XXL, Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 29"
- Spokes
- DT Swiss Champion, J-Bend, Black
- Front Hub
- Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle
- Rear Hub
- Bontrager alloy, sealed bearing, 6-bolt, 108T Rapid Drive, SRAM XD driver, Boost148, 12mm thru axle
- Tires
- Size: XS, S, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5 x 2.40''; Size: XS, S, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5 x 2.60"; Size: S, M, ML, L, XL, XXL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.40"; Size: S, M, ML, L, XL, XXL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29 x 2.60"
Accessories
- Disc Rotors
- Size: XS, S, M, ML, L, XL, XXL, SRAM CentreLine, 6-bolt, round-edge, 180 mm; Size: M, ML, L, XL, XXL, SRAM CentreLine, 6-bolt, round-edge, 200 mm
Weight & Sizing
- Weight
- 30.4 lbs
Frame sizing
WheelsManufacturer sizing
StackManufacturer sizing
ReachManufacturer sizing
Stack/Reach RatioManufacturer sizing
Top Tube LengthManufacturer sizing
Seat Tube LengthManufacturer sizing
Seat Tube AngleManufacturer sizing
Head Tube LengthManufacturer sizing
Head Tube AngleManufacturer sizing
BB DropManufacturer sizing
BB HeightManufacturer sizing
Front CenterManufacturer sizing
Chainstay LengthManufacturer sizing
WheelbaseManufacturer sizing
RakeManufacturer sizing
TrailManufacturer sizing
Standover HeightManufacturer sizing
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.