Bike Comparison
    MSRP
    $1,875
    Where to Buy
    $1

    At

    Category
    Fat
    4.7
    Aluminum
    Fork
    Carbon
    Wheels
    Aluminum
    27.5″
    Brakes
    Hydraulic Disc
    Groupset
    SX Eagle, X01 Eagle
    Drivetrain
    1 × 12
    Brand Site

    specialized.com

    Summary
    The Specialized Fatboy is a 27.5″ aluminum frame rigid fat bike with high-end components.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    Fatboy
    Other Fat bikes
    Spec Level

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

    Geometry
    Specs
    Frame

    Specialized M5 Aluminum, fully butted w/ Smooth Welds, tapered head tube and seat tube, forged post-mount 160mm disc dropouts, internal routing, forged bottom bracket shell, 197x12mm rear thru-axle

    Fork

    Specialized FACT carbon, 46mm offset, tapered steerer, 150mm axle

    Stem

    Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

    Handlebar

    Stout Riser, double-butted alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 750mm / 780mm width, 31.8mm

    Saddle

    Specialized Bridge, size specific, 143/155

    Seatpost

    Specialized 2-bolt head, forged alloy, 8mm offset, micro-adjust, 30.9mm

    Grips

    Specialized Sip grip, half-waffle, S/M: regular thickness, L/XL: XL thickness

    Groupset
    Rear Derailleur

    SRAM SX Eagle, 12-speed

    Crank

    SRAM X01 Eagle, DUB, 30T, Steel, 30T

    Shifters

    SRAM SX Eagle, trigger, 12-speed

    Chain

    SRAM SX Eagle, 12-speed w/ PowerLock®

    Brakes

    Front: SRAM Level T, hydraulic disc, 200/180mm, Rear: SRAM Level T, hydraulic disc, 180/160mm

    Wheels
    Rims

    Stout XC 80, 27.5", alloy, 76mm internal width, disc-specific, tubeless ready

    Spokes

    Stainless, 14g

    Front Hub

    Stout Pro 150, sealed cartridge bearings, 6-bolt disc, 15x150mm, 32h

    Rear Hub

    Stout Pro 197, sealed cartridge bearings, 6-bolt disc, 12x197mm, 32h

    Tires

    Front: Maxxis Minion FBF, 120 TPI, EXO, 27.5 x 3.8", Rear: Maxxis Minion FBR, 120 TPI, EXO, 27.5 x 3.8"

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