Bike Comparison
    MSRP
    $800$849
    Where to Buy
    $1

    At

    $699

    18% off At Trek

    $749

    12% off At Trek

    Category
    CrosscountryCrosscountry
    Weight
    31.1 lbs
    3.2
    3.5
    AluminumAluminum
    Fork
    Suntour XCMSuntour XCT
    Wheels
    AluminumAluminum
    27.5″27.5″ / 29″
    Brakes
    Hydraulic DiscHydraulic Disc
    Groupset
    AltusDeore
    Drivetrain
    2 × 91 × 10
    Suspension
    HardtailHardtail
    Front Travel
    100mm100mm
    Brand Site

    specialized.com

    trekbikes.com

    Summary
    The Specialized Rockhopper Sport 27.5 is a 27.5″ aluminum frame hardtail crosscountry bike with modest components.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    2021 Rockhopper Sport 27.5
    2023 Marlin 6 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)

    24 mph

    2023 Marlin 6 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

    A1 premium butted alloy, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger, stealth rack mounts, dropper post compatible

    ColorsGloss Cobalt / Cast Blue; Gloss White Mountains / Dusty Turquoise; Satin Slate / Cool Grey; Gloss Blaze / Ice Papaya; Satin Forest Green / Oasis

    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, XXL, Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135x5mm QR

    ColorsGloss Cobalt / Cast Blue; Gloss White Mountains / Dusty Turquoise; Satin Slate / Cool Grey; Gloss Blaze / Ice Papaya; Satin Forest Green / Oasis

    Fork

    SR Suntour XCM 27.5, 30mm stanchions, Rx Tune, coil spring, QR, 80/90/100mm travel (size-specific), 42mm offset

    Travel100mm

    Spring TypeCoil

    Size: XS, SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; Size: S, SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; Size: M, ML, L, XL, XXL, SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 46mm offset for 29'' wheel, 100mm QR, 100mm travel

    Travel100mm

    Spring TypeCoil

    Bottom Bracket

    Square-tapered, 73mm, internal bearings, 122.5mm spindle

    Sealed cartridge, 73mm

    Headset

    Semi-integrated, 1-1/8''

    Stem

    Stout 3D-forged alloy, 31.8mm, 6-degree rise

    Size: XS, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: S, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: M, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length; Size: ML, L, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 80mm length; Size: XL, XXL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 90mm length

    Handlebar

    Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm

    Size: XS, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: S, M, ML, L, XL, XXL, Bontrager alloy, 31.8mm, 5mm rise, 720mm width

    Saddle

    Bridge Sport, Steel rails, 155/143mm

    Bontrager Arvada, steel rails, 138mm width

    Seatpost

    Alloy, 12mm offset, 2-bolt clamp, 30.9mm

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

    Pedals

    VP-536 nylon platform

    Grips

    Specialized Trail Grips, lock-on

    Bontrager XR Endurance Comp, lock-on

    Groupset
    Rear Derailleur

    Shimano Altus, RD-M2000, 9-speed

    Shimano Deore M5120, long cage

    Front Derailleur

    Shimano Altus FD-M2020 2-speed

    Crank

    Stout 2x, forged alloy

    Prowheel C10Y-NW, 30T steel narrow-wide ring, 170mm length

    Shifters

    Shimano Altus, RapidFire Plus, 9-speed

    Shimano Deore M4100, 10 speed

    Cassette

    SunRace, 9-Speed, 11-36t

    Shimano Deore M4100, 11-46, 10 speed

    Chain

    KMC X9EPT, 9-speed, anti-corrosion coating w/ reusable Missing Link™

    KMC X10, 10 speed

    Brakes

    Front: Tektro HD-M275, hydraulic disc, 180/160mm, Rear: Tektro HD-M275, hydraulic disc, 160mm

    Tektro HD-M275 hydraulic disc, 180mm rotor

    Wheels
    Rims

    Specialized alloy, disc only, double-wall, 25mm inner width, 32h

    Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve

    Spokes

    Stainless, 14g

    Front Hub

    Formula 6-Bolt, disc, 100x9mm spacing, quick-release, 32H

    Formula DC-20, alloy, 6-bolt, 5x100mm QR

    Rear Hub

    Formula 6-Bolt freehub, disc, 135x9mm spacing, quick-release, 32H

    Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR

    Tires

    Front: Ground Control Sport, 27.5x2.3", Rear: Ground Control Sport, 27.5x2.3"

    Size: XS, S, Bontrager XR2 Comp, wire bead, 30 tpi, 27.5x2.20''; Size: M, ML, L, XL, XXL, Bontrager XR2 Comp, wire bead, 30 tpi, 29x2.20''

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