Bike Comparison
    MSRP
    $5,999$4,699
    Where to Buy
    $1

    At

    $4,699

    At Trek

    $3,699

    21% off At Trek

    Category
    TrailTrail
    Weight
    26.1 lbs29.5 lbs
    7.3
    6.1
    CarbonCarbon
    Fork
    RockShox SID Select+Fox Rhythm Float 34
    Shock
    RockShox SIDLuxe UltimateFox Float DPS Performance
    Wheels
    CarbonAluminum
    29″27.5″ / 29″
    Brakes
    Hydraulic DiscHydraulic Disc
    Groupset
    XTXT, Deore
    Drivetrain
    1 × 121 × 12
    Suspension
    FullFull
    Front Travel
    120mm120mm
    Rear Travel
    115mm120mm
    Brand Site

    trekbikes.com

    trekbikes.com

    Summary
    The Trek Top Fuel 9.8 XT is a 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 Top Fuel 9.8 XT
    2023 Top Fuel 9.7
    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)

    28 mph

    2021 Top Fuel 9.8 XT

    26 mph

    2023 Top Fuel 9.7

    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

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.4"

    ColorsMatte Raw Carbon / Voodoo Trek Black; Gloss Red / Matte Carbon Smoke; Carbon Blue Smoke / Radioactive Coral

    OCLV Mountain Carbon, internal storage, tapered head tube, Knock Block 2.0, internal guided routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 120mm travel

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.4"

    ColorsMatte Raw Carbon / Voodoo Trek Black; Gloss Red / Matte Carbon Smoke; Carbon Blue Smoke / Radioactive Coral

    Fork

    RockShox SID Select+, DebonAir spring, Charger 2 RL damper, tapered steerer, 44 mm offset, Boost110, 15 mm Maxle Stealth, 120 mm travel

    Travel120mm

    Spring TypeAir

    Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 120mm travel

    Travel120mm

    Spring TypeAir

    Shock

    RockShox SID Luxe Ultimate, DebonAir spring, Ultimate RL damper, 190 x 45 mm

    Fox Performance Float DPS, 3-position damper, 185mm x 50mm

    Bottom Bracket

    Shimano MT500, 92 mm, PressFit

    Size: XS, S, M, M/L, L, XL, Shimano BB-MT501 BSA; Size: XS, S, M, M/L, L, XL, Shimano SM-BB52, 73mm, threaded external bearing

    Headset

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

    Knock Block 2.0 Integrated, 72-degree radius (includes infinite-radius chip), sealed 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

    Bontrager Elite, 35mm, 0 degree, 45mm length

    Handlebar

    Bontrager Line Pro, OCLV Carbon, 35 mm, 15 mm rise, 750 mm width

    Size: XS, S, Bontrager Line, alloy, 35mm, 27.5mm rise, 750mm width; Size: M, M/L, L, XL, Bontrager Line, alloy, 35mm, 27.5mm rise, 780mm width

    Saddle

    Bontrager Montrose Elite, titanium rails, 138 mm width

    Bontrager Arvada, steel rails, 138mm width

    Seatpost

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

    Size: XS, S, TranzX JD-YSP39, 100mm travel, internal routing, 34.9mm; Size: M, M/L, TranzX JD-YSP39, 150mm travel, internal routing, 34.9mm; Size: L, XL, TranzX JD-YSP39, 170mm travel, internal routing, 34.9mm

    Grips

    Bontrager XR Trail Elite, alloy lock-on

    Bontrager XR Trail Comp, nylon lock-on

    Groupset
    Rear Derailleur

    Shimano XT M8100, long cage

    Shimano XT M8100, long cage

    Crank

    Size: S, Shimano XT M8100, 32T alloy ring, Boost, 52 mm chain line, 170 mm length; Size: M, M/L, L, XL, Shimano XT M8100, 32T alloy ring, Boost, 52 mm chain line, 175 mm length

    Size: XS, S, M, M/L, L, Shimano Deore M6120, 30T ring, 55mm chainline, 170mm length; Size: XL, Shimano Deore M6120, 30T ring, 55mm chainline, 175mm length

    Shifters

    Shimano XT M8100, 12-speed

    Shimano XT M8100, 12 speed

    Cassette

    Shimano XT M8100, 10-51, 12-speed

    Shimano SLX M7100, 10-51T, 12 speed

    Chain

    Shimano Ultegra/XT M8100, 12-speed

    Shimano SLX M7100, 12 speed

    Brakes

    Shimano SLX M7000 hydraulic disc, 180 mm front rotor, 160 mm rear rotor

    Shimano 4-piston hydraulic disc, M6100 lever, M6120 caliper

    Wheels
    Rims

    Bontrager Kovee Elite 30, OCLV Mountain Carbon, Tubeless-Ready

    Front: Size: XS, Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 27.5''; Size: S, M, M/L, L, XL, Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle, 29'', Rear: Size: XS, Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 54, 6-bolt, Boost148, 12mm thru axle, 27.5''; Size: S, M, M/L, L, XL, Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12mm thru axle, 29''

    Front Hub

    Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle

    Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15mm thru axle

    Rear Hub

    Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano MicroSpline freehub, Boost148, 12 mm thru axle

    Tires

    Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120 tpi, 29 x 2.40"

    Size: XS, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120tpi, 27.5x2.40''; Size: S, M, M/L, L, XL, Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120tpi, 29x2.40''

    Disc Rotors

    Size: S, M, M/L, L, XL, Shimano RT66, 6-bolt, 180 mm; Size: S, M, M/L, L, XL, Shimano RT66, 6-bolt, 160 mm

    Size: XS, S, M, M/L, L, XL, Shimano RT66, 6-bolt, 160mm; Size: XS, S, M, M/L, L, XL, Shimano RT66, 6-bolt, 180mm

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