Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2019 Trek Fuel EX 9.8 29
Previous used estimate
$1,586 - $1,631
Actual value depends on condition, size, and local demand.
Value Guide market data · 2019 Trek Fuel EX 9.8 29
12-month projected trend
11%
Direction and magnitude, not judgment
vs. category average
4%
Drops faster than category avg
Price over time - 2019 Trek Fuel EX 9.8 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
Fuel EX 9.8 is the versatile carbon trail bike that can climb with the XC crowd and throw down with the rowdy trail crew. A lightweight OCLV Mountain Carbon frame, 1x12 SRAM GX Eagle drivetrain, carbon wheels, and FOX Performance Float suspension with Trek's exclusive RE:aktiv with Thru Shaft shock make it the perfect choice for all-mountain shredders who want a single bike that does it all. It's right for you if... You like going fast, getting rowdy, and clearing every obstacle on the first try. You want a single bike that can handle any trail, with high-quality parts, a carbon frame, and dialed suspension for everything from burly technical descents to single track and even XC races. The tech you get A light and stiff OCLV Mountain Carbon frame, Tubeless Ready Bontrager Line Carbon 30 wheels with a 54-tooth Rapid Drive rear hub for quick engagement, a 1x12 SRAM GX Eagle drivetrain, a 130mm FOX Performance 34 Float fork, and a FOX Performance Float shock featuring Trek's exclusive RE:aktiv with Thru Shaft. Plus, a Bontrager Line dropper post and a 35mm Bontrager Line Pro OCLV Carbon handlebar. The final word Fuel EX 9.8 is the definitive mountain bike, and a great choice if you're going to invest in a single bike for all kinds of terrain. A carbon frame, quality parts build, and advanced suspension make it an outstanding all-around mountain bike for every kind of trail. Why you'll love it 1 - It doesn't box itself into a category: Fuel EX brings trail bike plushness with an XC race bike feel for our most versatile mountain bike whip 2 - RE:aktiv with Thru Shaft works faster than a normal shock, so it tracks the ground better and keeps you in control 3 - It's great for riders who don't want to do just one kind of mountain biking, but want to explore everything from XC marathons to epic descents 4 - The SRAM GX Eagle drivetrain provides all the range you'll ever need in the simplicity of a 1x setup
Specifications
- Subtype
- Trail / Enduro
- Category
- Mountain
- Component Fork
- Fox Performance 34 Float, GRIP 3-position damper, tapered steerer, G2 Geometry w/51mm offset, Boost110, 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 clamp, 0 degree
- Product Family
- Fuel
- Component Axles
- Front: 15 x 110mm Rear: 12 x 148mm
- Component Chain
- SRAM GX Eagle
- Component Color
- Gloss Purple Phaze/Matte Trek Black, Matte Gravel/Quicksilver, Radioactive Orange/Trek Black, Viper Red/Trek White, Volt/Solid Charcoal
- Component Frame
- OCLV Mountain Carbon main frame & seatstay, alloy chainstay, ABP, Boost148, Knock Block steerer stop, Full Floater, EVO link, tapered head tube, Mino Link, Control Freak internal routing, Carbon Armor, PF92, ISCG 05, G2 Geometry, 130mm travel
- Component Brakes
- Shimano SLX M7000 hydraulic disc
- Component Pedals
- Not included
- Component Saddle
- Bontrager Arvada, austenite rails
- Component Headset
- Knock Block Integrated, sealed cartridge bearing, 1-1/8-inch top, 1.5-inch bottom
- Component Cassette
- SRAM XG-1275 Eagle, 10-50, 12 speed
- Component Crankset
- Truvativ Descendant 7k Eagle DUB
- Component Shifters
- SRAM GX Eagle, 12 speed
- Component Handlebar
- Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
- Component Seat Post
- Bontrager Line, internal routing, 31.6mm, 15.5-inch size: 100mm, 17.5-inch & 18.5-inch sizes: 125mm, 19.5-inch & 21.5-inch sizes: 150mm
- Component Chainrings
- 32T Direct Mount
- Component Front Tire
- Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 29x2.40?
- Component Rear Shock
- Fox Performance Float EVOL, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 210x52.5mm
- Component Tape Grips
- Bontrager XR Trail Elite, alloy lock-on
- Component Bottom Bracket
- SRAM DUB Press Fit, 92mm
- Component Rear Derailleur
- SRAM GX Eagle, Roller Bearing Clutch
- Rear Shock
- Fox Performance Float EVOL, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 210x52.5mm
- Crankset
- Truvativ Descendant 7k Eagle DUB
- Pedals
- Not included
- Bottom Bracket
- SRAM DUB Press Fit, 92mm
- Chain
- SRAM GX Eagle
- Saddle
- Bontrager Arvada, austenite rails
- Handlebar
- Bontrager Line Pro, OCLV Carbon, 35mm, 15mm rise, 750mm width
- Headset
- Knock Block Integrated, sealed cartridge bearing, 1-1/8-inch top, 1.5-inch bottom
- Rear Derailleur
- SRAM GX Eagle, Roller Bearing Clutch
- Stem
- Bontrager Line Pro, Knock Block, 35mm clamp, 0 degree
- Axles
- Front: 15 x 110mm Rear: 12 x 148mm
- Brakes
- Shimano SLX M7000 hydraulic disc
- Cassette
- SRAM XG-1275 Eagle, 10-50, 12 speed
- Chainrings
- 32T Direct Mount
- Fork
- Fox Performance 34 Float, GRIP 3-position damper, tapered steerer, G2 Geometry w/51mm offset, Boost110, 130mm travel
- Frame
- OCLV Mountain Carbon main frame & seatstay, alloy chainstay, ABP, Boost148, Knock Block steerer stop, Full Floater, EVO link, tapered head tube, Mino Link, Control Freak internal routing, Carbon Armor, PF92, ISCG 05, G2 Geometry, 130mm travel
- Seat Post
- Bontrager Line, internal routing, 31.6mm, 15.5-inch size: 100mm, 17.5-inch & 18.5-inch sizes: 125mm, 19.5-inch & 21.5-inch sizes: 150mm
- Shifters
- SRAM GX Eagle, 12 speed
- Tape/Grips
- Bontrager XR Trail Elite, alloy lock-on
- Color
- Volt/Solid Charcoal
- Size
- 21.5-inch
- Front Tire
- Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, 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.