Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2018 Trek Fuel EX 9.9 29
Previous used estimate
$2,324 - $2,391
Actual value depends on condition, size, and local demand.
Value Guide market data · 2018 Trek Fuel EX 9.9 29
12-month projected trend
7%
Direction and magnitude, not judgment
vs. category average
5%
Drops faster than category avg
Price over time - 2018 Trek Fuel EX 9.9 29
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Fuel model years
Overview
About this bike
Freedom to roam Modern trail geometry, 29? or 27.5? mid-fat options, and 130mm of travel make Fuel EX is the one go-to full suspension trail bike for all riders. Want a rugged, capable long-travel trail bike with the responsiveness of an XC bike? This is it. Fuel EX blends the best of both worlds in one uncompromising package. - Revolutionary new RE:aktiv with Thru Shaft damper: the most responsive shock available - Capable and stiff 130mm frame is 29? and 27.5+ compatible - Exclusive suspension tech with ABP, Full Floater, and RE:aktiv - Straight Shot stiffness, Knock Block frame defense
Specifications
- Subtype
- Trail / Enduro
- Category
- Mountain
- Component Fork
- Fox Factory 34 Float, FIT4 3-position damper, E2 tapered steerer, Kashima Coat, G2 Geometry w/51mm offset, 130mm travel
- Component Size
- 15.5-inch, 17.5-inch, 18.5-inch, 19.5-inch, 21.5-inch
- Component Stem
- Bontrager Line Pro, Knock Block, 35mm, 0 degree
- Product Family
- Fuel
- Component Axles
- Front: Boost110Rear: Boost148
- Component Chain
- SRAM XX1 Eagle
- Component Color
- Matte Trek Black/Gloss Solid Charcoal, Radioactive Orange/Trek Black, Radioactive Purple/Radioactive Yellow-Orange Fade, Trek Black/Green Light
- Component Frame
- OCLV Mountain Carbon main frame & stays, ABP, Knock Block steerer stop, Full Floater, EVO link, E2 tapered head tube, Mino Link, Control Freak internal routing, Carbon Armor, PF92, ISCG 05, G2 Geometry, 130mm travel
- Component Brakes
- SRAM Guide Ultimate carbon hydraulic disc
- Component Saddle
- Bontrager Evoke RXL, carbon rails
- Component Headset
- FSA Knock Block IS-2, E2, sealed cartridge
- Component Cassette
- SRAM XG-1295, 10-50, 12 speed
- Component Crankset
- SRAM XX1 Eagle
- Component Shifters
- SRAM XX1 Eagle, 12 speed
- Component Handlebar
- Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
- Component Seat Post
- Bontrager Drop Line, internal routing, 31.6mm 15.5: 100mm / 17.5 & 18.5: 125mm / 19.5 & 21.5: 150mm
- Component Chainrings
- 32T Direct Mount X-Sync
- Component Front Tire
- Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 29x2.40"
- Component Rear Shock
- Fox Factory Float EVOL, RE:aktiv with Thru Shaft 3-position damper, Kashima Coat, tuned by Trek Suspension Lab, 210x52.5mm
- Component Tape Grips
- Bontrager Race Lite, lock-on
- Component Brake Levers
- SRAM Guide Ultimate carbon hydraulic disc
- Component Bottom Bracket
- PF92
- Component Rear Derailleur
- SRAM XX1 Eagle, Roller Bearing Clutch
- Rear Shock
- Fox Factory Float EVOL, RE:aktiv with Thru Shaft 3-position damper, Kashima Coat, tuned by Trek Suspension Lab, 210x52.5mm
- Crankset
- SRAM XX1 Eagle
- Bottom Bracket
- PF92
- Chain
- SRAM XX1 Eagle
- Saddle
- Bontrager Evoke RXL, carbon rails
- Handlebar
- Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
- Headset
- FSA Knock Block IS-2, E2, sealed cartridge
- Rear Derailleur
- SRAM XX1 Eagle, Roller Bearing Clutch
- Stem
- Bontrager Line Pro, Knock Block, 35mm, 0 degree
- Axles
- Front: Boost110Rear: Boost148
- Brake Levers
- SRAM Guide Ultimate carbon hydraulic disc
- Brakes
- SRAM Guide Ultimate carbon hydraulic disc
- Cassette
- SRAM XG-1295, 10-50, 12 speed
- Chainrings
- 32T Direct Mount X-Sync
- Fork
- Fox Factory 34 Float, FIT4 3-position damper, E2 tapered steerer, Kashima Coat, G2 Geometry w/51mm offset, 130mm travel
- Frame
- OCLV Mountain Carbon main frame & stays, ABP, Knock Block steerer stop, Full Floater, EVO link, E2 tapered head tube, Mino Link, Control Freak internal routing, Carbon Armor, PF92, ISCG 05, G2 Geometry, 130mm travel
- Seat Post
- Bontrager Drop Line, internal routing, 31.6mm 15.5: 100mm / 17.5 & 18.5: 125mm / 19.5 & 21.5: 150mm
- Shifters
- SRAM XX1 Eagle, 12 speed
- Tape/Grips
- Bontrager Race Lite, lock-on
- Color
- Trek Black/Green Light
- Size
- 21.5-inch
- Front Tire
- Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 29x2.40"
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.