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    Fatboy

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    2017 Fatboy

    Going fat isn't just a fun way to ride—it's a ride revolution. The security and control that the wheel system found on our Fatboy provides is unparalleled. You get dramatically more traction, grip, and floatation than with traditional mountain tires, all without sacrificing much to climbing efficiency. The end result is easy to explain—you have way more fun. And to make sure of it, we built the Fatboy with a durable list of components that are low-maintenance and eager to perform season after season. Have more fun—go fat.

    Technical Specifications

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    FRAMESET

    FRAME

    M5 Aluminum, fully butted w/smooth welding, tapered head tube and seat tube, 100mm of travel, forged post mount 160mm disc drop outs, internal routing, forged bottom bracket shell, 197x12mm thru-axle rear

    SEAT BINDER

    Alloy, 31.8mm

    SUSPENSION

    FORK

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

    WHEELS

    RIMS

    Specialized 26"" disc front, 21mm depth, 86mm internal width, 32h

    FRONT HUB

    Specialized Stout XC, alloy disc, double-sealed cartridge bearings, 15x150mm thru-axle, 32h

    REAR HUB

    Stout XC 197, disc alloy, sealed cartridge bearings, 12x197mm thru-axle, 32h

    SPOKES

    Stainless, black, 14g

    FRONT TIRE

    Ground Control Fat, Control casing, 120 TPI, Aramid folding bead, 2Bliss Ready, 26x4.6""

    REAR TIRE

    Ground Control Fat, Control casing, 120 TPI, Aramid folding bead, 2Bliss Ready, 26x4.6""

    INNER TUBES

    Standard, Presta valve

    DRIVETRAIN

    REAR DERAILLEUR

    SRAM X7 Type 2.1, long cage, 10-speed

    SHIFT LEVERS

    SRAM X7, 10-speed, trigger

    CASSETTE

    Sunrace, 10-speed, 11-42t

    CHAIN

    10-speed, extra lightweight hollow outer links w/reusable Missing Link # CL559R

    CRANKSET

    RaceFace Aeffect Cinch, 28T chainring, 11-speed, threaded BB

    COCKPIT

    STEM

    Specialized Alloy, 3D forged, 4-bolt, 6-degree

    HANDLEBARS

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

    GRIPS

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

    SADDLE

    Body Geometry Henge Comp, hollow Cr-Mo rails, 143mm

    SEATPOST

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

    BRAKES

    FRONT BRAKE

    Tektro Gemini, hydraulic disc, resin pads, i-Spec compatible, 180mm rotor

    REAR BRAKE

    Tektro Gemini, hydraulic disc, resin pads, i-Spec compatible, 160mm rotor

    ACCESSORIES

    PEDALS

    Specialized Dirt Pedals

    * Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.

    Geometry

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    SMLXL
    Crank Length170mm175mm175mm175mm
    Handlebar Width750mm750mm750mm750mm
    Stem Length60mm60mm70mm70mm
    Saddle Width143mm143mm143mm143mm
    Seatpost Length350mm350mm400mm400mm
    Seat-Tube Angle73°73°73°73°
    Head-Tube Length110mm120mm135mm150mm
    Head-Tube Angle70.5°70.5°70.5°70.5°
    Chain-Stay Length455mm455mm455mm455mm
    Front-Center634mm663mm685mm711mm
    B-B Drop60mm60mm60mm60mm
    B-B Height316mm316mm316mm316mm
    Bike Stand-Over Height754mm786mm812mm840mm
    Fork Length (full)467mm467mm467mm467mm
    Top-Tube Length (horizontal)576mm603mm625mm650mm
    Seat-Tube Length394mm445mm483mm533mm
    Stack590mm600mm614mm628mm
    Reach395mm420mm437mm458mm
    Trail84mm84mm84mm84mm
    Fork Rake/Offset46mm46mm46mm46mm
    Wheelbase1083mm1111mm1133mm1159mm
    Geometry

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