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    MSRP
    Where to Buy
    $1

    At

    Category
    Fat
    6.1
    Frame
    Aluminum
    RockShox Bluto RL
    Wheels
    Aluminum
    Wheel Size
    26″
    Shimano XT Hydraulic Disc
    X01
    Drivetrain
    1 × 11
    Brand Site

    specialized.com

    Summary
    The Specialized Fatboy Pro is a 26″ aluminum frame hardtail fat bike with ultra high-end components.

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    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Handling
    nimblestable
    Fatboy Pro
    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)

    21 mph

    Fatboy Pro

    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

    RockShox Bluto RL, Solo Air spring, TurnKey damping, tapered alloy steerer, external rebound adj. 32mm alloy stanchions w/ mag lowers, disc mount, QR 15mm thru-axle for 150mm hub spacing

    Spring TypeAir

    Bottom Bracket

    PF30, 100mm, press-fit

    Headset

    1-1/8"" upper, 1-1/2"" lower, integrated Campy style, 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, mini rise, 7050 alloy, 8-backsweep, 6-upsweep, 10mm rise, 31.8mm

    Saddle

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

    Seatpost

    Command Post BlackLite, alien head design, single bolt head, w/ remote adjust lever, 30.9mm, S: 100mm travel, M/L/XL: 125mm

    TypeDropper

    Pedals

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

    Grips

    Specialized Body Geometry XC Contour, Kraton w/ gel, lock-on, closed end

    Groupset
    Rear Derailleur

    SRAM X01, 11-speed, carbon cage

    Crank

    Race Face Next SL, PF30 BB, 100mm spindle, 30T, spiderless

    Shifters

    SRAM X01,11-speed, trigger

    Cassette

    SRAM X1, 11-speed, 11-42

    Chain

    KMC X11L, 11-speed, reusable Missing Link

    Brakes

    Front: Shimano XT, hydraulic disc, Ice Tech resin pads w/ fins, Ice Tech rotor, Rear: Shimano XT, hydraulic disc, Ice Tech resin pads w/ fins, Ice Tech rotor

    TypeShimano XT Hydraulic Disc

    Brake Levers

    Shimano XT, 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 Hi Lo disc, sealed cartridge bearings, 15mm thru-axle, 150mm wide, 32h

    Rear Hub

    Specialized Hi Lo disc, alloy, sealed cartridge bearings, XD driver body, 190mm 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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