Bike Comparison
    MSRP
    $5,999$6,749
    Where to Buy
    $1

    At

    $6,749

    At Trek

    $4,299

    36% off At Trek

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    Category
    TrailTrail
    Weight
    28.9 lbs31.5 lbs
    7.4
    7.2
    CarbonCarbon
    Fork
    Fox Performance Float 36Fox Performance Float 36
    Shock
    FoxFox Float X Performance
    Wheels
    CarbonCarbon
    27.5″ / 29″29″
    Brakes
    Hydraulic DiscHydraulic Disc
    Groupset
    GX EagleXT
    Drivetrain
    1 × 121 × 12
    Suspension
    FullFull
    Front Travel
    140mm150mm
    Rear Travel
    130mm140mm
    Brand Site

    trekbikes.com

    trekbikes.com

    Summary
    The Trek Fuel EX 9.8 GX is a 27.5″ / 29″ carbon frame full suspension trail bike with high-end components.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    2021 Fuel EX 9.8 GX
    2024 Fuel EX 9.8 XT Gen 6
    Other Trail bikes
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    26 mph

    2021 Fuel EX 9.8 GX

    26 mph

    2024 Fuel EX 9.8 XT Gen 6

    Highest gear

    (descending)

    Spec Level

    Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

    Geometry
    Specs
    Frame

    OCLV Mountain Carbon main frame & stays, internal storage, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.6"

    ColorsRaw Carbon / Rage Red; Lithium Grey / Factory Orange; Matte Carbon Smoke

    OCLV Mountain Carbon, internal storage, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, guided internal routing, magnesium rocker link, 34.9mm seat tube, ISCG 05, 55mm chainline, BSA 73, downtube guard, shuttle guard, ABP, UDH, Boost148, 140mm travel

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.6"

    ColorsRaw Carbon / Rage Red; Lithium Grey / Factory Orange; Matte Carbon Smoke

    Fork

    Fox Performance 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel

    Travel150mm

    Spring TypeAir

    Fox Performance 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 150mm travel

    Travel150mm

    Spring TypeAir

    Shock

    Size: XS, S, Fox Performance Float EVOL, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 210mm x 52.5mm; Size: S, M, ML, L, XL, Fox Performance Float EVOL, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 210mm x 55mm

    Fox Performance Float X, 2-position damper, 185mm x 55mm

    Bottom Bracket

    SRAM DUB, 92mm, PressFit

    Shimano BB-MT501 BSA

    Headset

    Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom

    Integrated cartridge bearing, 1-1/8'' top, 1.5'' bottom, angle adjust cup compatible

    Stem

    Size: XS, S, Bontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree, 35mm length; Size: M, ML, L, XL, Bontrager Line Pro, 35mm, Knock Block, Blendr compatible, 0 degree, 45mm length

    Handlebar

    Bontrager Line Pro, OCLV Carbon, 35mm, 27.5mm rise, 780mm width

    Saddle

    Bontrager Arvada, austenite rails, 138mm width

    Bontrager Arvada, austenite rails, 138mm width

    Seatpost

    Size: XS, S, Bontrager Line Elite, 100mm travel, MaxFlow, internal routing, 31.6mm, 340mm length; Size: XS, S, Bontrager Line Elite Dropper, 100mm travel, internal routing, 31.6mm, 340mm length; Size: M, ML, Bontrager Line Elite, 150mm travel, MaxFlow, internal routing, 31.6mm, 440mm length; Size: M, ML, Bontrager Line Elite Dropper, 150mm travel, internal routing, 31.6mm, 440mm length; Size: L, XL, Bontrager Line Elite, 170mm travel, MaxFlow, internal routing, 31.6mm, 480mm length; Size: L, XL, Bontrager Line Elite Dropper, 170mm travel, internal routing, 31.6mm, 480mm length

    Size: XS, S, Bontrager Line Elite Dropper, 100mm travel, MaxFlow, internal routing, 34.9mm, 345mm length; Size: M, ML, Bontrager Line Elite Dropper, 150mm travel, MaxFlow, internal routing, 34.9mm, 440mm length; Size: L, Bontrager Line Elite Dropper, 170mm travel, MaxFlow, internal routing, 34.9mm, 485mm length; Size: XL, Bontrager Line Elite Dropper, 200mm travel, MaxFlow, internal routing, 34.9mm, 550mm length

    Grips

    Size: XS, S, M, ML, L, XL, Bontrager XR Trail Elite, nylon lock-on; Size: XS, S, M, ML, L, XL, Bontrager XR Trail Elite, alloy lock-on

    Bontrager XR Trail Elite, nylon lock-on

    Groupset
    Rear Derailleur

    SRAM GX Eagle

    Shimano XT M8100, long cage

    Crank

    Size: XS, S, SRAM GX Eagle, DUB, 30T alloy ring, Boost (52mm chainline), 170mm length; Size: S, M, ML, L, XL, SRAM GX Eagle, DUB, 30T alloy ring, Boost (52mm chainline), 175mm length

    Shimano XT M8120, 30T, 55mm chainline, 170mm length

    Shifters

    SRAM GX Eagle, 12 speed

    Shimano XT M8100, 12 speed

    Cassette

    SRAM Eagle XG-1275, 10-52, 12 speed

    Shimano XT M8100, 10-51, 12 speed

    Chain

    SRAM GX Eagle, 12 speed

    Shimano Ultegra/XT M8100, 12 speed

    Brakes

    SRAM G2 RS 4-piston hydraulic disc

    Shimano XT M8120 4-piston hydraulic disc

    Wheels
    Rims

    NEW Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle

    Front: Size: XS, S, Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 27.5''; Size: S, M, ML, L, XL, Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29'', Rear: Size: XS, S, Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle, 27.5''; Size: S, M, ML, L, XL, Bontrager Line Elite 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, Shimano MicroSpline freehub, Boost148, 12mm thru axle, 29''

    Front Hub

    Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm 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, 27.5x2.40''; Size: XS, S, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 27.5x2.60''; Size: S, M, ML, L, XL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29x2.40''; Size: S, M, ML, L, XL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60''

    Size: XS, S, Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 60 tpi, 27.5x2.50''; Size: S, M, ML, L, XL, Bontrager SE5 Team Issue, Tubeless Ready, Core Strength sidewalls, aramid bead, 60 tpi, 29x2.50''

    Disc Rotors

    Size: XS, S, M, ML, L, XL, SRAM CenterLine, 6-bolt, round edge, 180mm; Size: M, ML, L, XL, SRAM CenterLine, 6-bolt, round edge, 200mm

    Size: XS, S, M, ML, L, XL, Shimano RT86, 6-bolt, 180mm; Size: M, ML, L, XL, Shimano RT86, 6-bolt, 203mm

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