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    MSRP
    Where to Buy
    $1

    At

    Category
    Fat
    5.1
    Frame
    Aluminum
    Carbon
    Wheels
    Aluminum
    Wheel Size
    26″
    Shimano Deore Hydraulic Disc
    X0, e*thirteen TRS Plus
    Drivetrain
    2 × 10
    Brand Site

    specialized.com

    Summary
    The Specialized Fatboy Expert is a 26″ aluminum frame rigid fat bike with high-end components.

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    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    Fatboy Expert
    Other Fat 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)

    25 mph

    Fatboy Expert

    Highest gear

    (descending)

    Geometry
    Specs
    Frame

    Specialized M4 Premium Aluminum, fully butted w/ smooth welds, tapered headtube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger

    BB StandardPF30, 100mm, Press Fit

    Fork

    Specialized FACT carbon, full monocoque, tapered steerer, 135mm hub spacing

    Bottom Bracket

    PF30, 100mm, press-fit

    Headset

    1-1/8"" upper, 1-1/2"" lower, Campy style, integrated sealed cartridge bearings, split crown race, 3.8mm cone spacer

    Stem

    Specialized, 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware

    Handlebar

    Specialized, low rise, double butted 6061 alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 31.8mm

    Saddle

    Body Geometry mountain, hollow Cr-Mo rails, 143mm

    Seatpost

    Alloy, 2-bolt, 12.5mm offset, 30.9mm, anti-corrosion hardware

    TypeRigid

    Pedals

    Specialized Bennies, 6061 alloy body, sealed cartridge, 4.5mm removable pins

    Grips

    SRAM, S-Series Grip Shift, 92mm

    Groupset
    Rear Derailleur

    SRAM X0 Type 2, 10-speed, medium cage

    Front Derailleur

    SRAM X7, 2x10, low direct mount

    Crank

    Custom e.thirteen, TRS+, PF30, 100mm spindle, w/ BB, 104/64mm BCD spider

    Shifters

    SRAM S-Series, Grip Shift, 10-speed

    Cassette

    Sunrace, 10-speed, 11-36

    Chain

    KMC X10L, 10-speed, reusable Missing Link

    Brakes

    Front: Shimano Deore BR-M506, hydraulic disc, dual piston, resin pads, Rear: Shimano Deore BR-M506, hydraulic disc, dual piston, resin pads

    TypeShimano Deore Hydraulic Disc

    Brake Levers

    Shimano Deore BL-M506, hydraulic, w/ reach adjust

    Wheels
    Rims

    Specialized Fatboy SL, alloy disc, single wall, 90mm wide, sleeve joint, hookless design, 32h

    Spokes

    Stainless, 2.0/1.8/2.0mm

    Front Hub

    Specialized MTB Hi Lo disc, alloy, sealed cartridge bearings, 135mm wide, QR, 32h

    Tires

    Front: Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6"", Rear: Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6""

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