Bike Comparison
    MSRP
    $8,999$579
    Where to Buy
    $5,499

    42% off At Trek

    $579

    At Trek

    Category
    CrosscountryCrosscountry
    Weight
    24.5 lbs32.2 lbs
    8.5
    2.4
    CarbonAluminum
    Fork
    Fox Factory Float 34Suntour XCE
    Shock
    Fox Float DPS Factory
    Wheels
    Carbon
    29″27.5″ / 29″
    Brakes
    Hydraulic DiscMechanical Disc
    Groupset
    XX1 EagleTourney, Altus
    Drivetrain
    1 × 122 × 7
    Suspension
    FullHardtail
    Front Travel
    120mm100mm
    Rear Travel
    115mm-
    Brand Site

    trekbikes.com

    trekbikes.com

    Summary
    The Trek Top Fuel 9.9 is a 29″ carbon frame full suspension crosscountry bike with ultra high-end components.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    2020 Top Fuel 9.9
    2024 Marlin 4 Gen 2
    Other Crosscountry 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

    2020 Top Fuel 9.9

    22 mph

    2024 Marlin 4 Gen 2

    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, tapered head tube, Knock Block, Control Freak internal routing, Carbon Armor, magnesium rocker link, Mino Link, ABP, Boost148, 115mm travel

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.4"

    ColorsMatte Carbon / Gloss Trek Black; Trek Black to Teal Fade; Viper Red

    Size: XS, S, Alpha Silver Aluminum, curved top tube, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR; Size: M, ML, L, XL, Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR

    BB StandardBB86/BB92, Press Fit

    Tire Clearance2.4"

    ColorsMatte Carbon / Gloss Trek Black; Trek Black to Teal Fade; Viper Red

    Fork

    Fox Factory 34 Step-Cast, Float EVOL air spring, FIT4 2-position damper, dual remote lockout, tapered steerer, 44mm offset, Kashima Coat, Boost110, 15mm Kabolt axle, 120mm travel

    Travel100mm

    Spring TypeCoil

    Size: XS, SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; Size: S, SR Suntour XCE 28, coil spring, preload, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; Size: M, ML, L, XL, SR Suntour XCE 28, coil spring, preload, 46mm offset for 29'' wheel, 100mm QR, 100mm travel

    Travel100mm

    Spring TypeCoil

    Shock

    Fox Factory Float, 2-position DPS damper, Kashima Coat, 190x45mm

    Bottom Bracket

    SRAM DUB, 92mm, PressFit

    VP BC73, 73mm, threaded cartridge

    Headset

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

    Semi-integrated, 1-1/8''

    Stem

    Bontrager Kovee Pro, 35mm, Knock Block, Blendr compatible, 13 degree, 60mm length

    Size: XS, S, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: M, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: ML, L, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: XL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 80mm length

    Handlebar

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

    Size: XS, S, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: M, ML, L, XL, Bontrager alloy, 31.8mm, 15mm rise, 750mm width

    Saddle

    Bontrager Montrose Pro, 7x10mm carbon rails, 138mm width

    Bontrager Verse Short, stainless steel rails

    Seatpost

    Bontrager Line Elite Dropper, 100mm travel, internal routing, 31.6mm, 340mm length

    Size: XS, S, Bontrager alloy, 31.6mm, 12mm offset, 330mm length; Size: M, Bontrager alloy, 31.6mm, 12mm offset, 360mm length; Size: ML, L, XL, Bontrager alloy, 31.6mm, 12mm offset, 400mm length

    Pedals

    VP-536 nylon platform

    Grips

    Bontrager XR Endurance Comp, lock-on

    Groupset
    Rear Derailleur

    SRAM XX1 Eagle

    Shimano Tourney TY300

    Front Derailleur

    Shimano Altus M315, 34.9mm clamp, top swing, dual pull

    Crank

    SRAM XX1 Eagle Carbon, DUB, 32T alloy ring, Boost (52mm chainline), carbon, 170mm length

    Size: XS, S, M, ProWheel TM-CY10, 36/22, 170mm length; Size: ML, L, XL, ProWheel TM-CY10, 36/22, 175mm length

    Shifters

    SRAM XX1 Eagle, 12 speed

    Size: XS, S, M, ML, L, XL, Shimano EF500, 8 speed; Size: XS, S, M, ML, L, XL, Shimano EF500, 7 speed

    Cassette

    SRAM XG-1295 Eagle, 10-50, 12 speed

    Shimano TZ500, 14-34, 7 speed

    Chain

    SRAM XX1 Eagle, 12 speed

    KMC Z7, 7 speed

    Brakes

    SRAM Level Ultimate hydraulic disc, carbon levers, 180mm front rotor, 160mm rear rotor

    Size: XS, S, M, ML, L, XL, Tektro MD-M280 mechanical disc; Size: XS, S, M, ML, L, XL, Tektro MD-M281 mechanical disc

    Wheels
    Rims

    Bontrager Kovee Pro 30 carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle

    Tires

    Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40''

    Disc Rotors

    Size: S, SRAM CenterLine, 6-bolt, round-edge, 160mm; Size: S, SRAM CenterLine, 6-bolt, round edge, 180mm

    Tektro, 6-bolt, 160mm

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