Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals
Bike Comparison
    MSRP
    Where to Buy
    $1

    At

    Category
    Fat
    4.7
    Frame
    Aluminum
    Carbon
    Wheels
    Aluminum
    Wheel Size
    26″
    Tektro Gemini Hydraulic Disc
    X7
    Drivetrain
    2 × 10
    Brand Site

    specialized.com

    Summary
    The Specialized Fatboy is a 26″ aluminum frame rigid fat bike with upper mid-range components.

    Ask 99 Spokes

    Similar Bikes
    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    Fatboy
    Other Fat bikes
    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, Press Fit

    Fork

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

    Bottom Bracket

    Samox, PF30

    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, steel rails, 143mm

    Seatpost

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

    TypeRigid

    Pedals

    Resin test ride, w/ toe clips, CEN std.

    Grips

    SRAM, S-Series Grip Shift, 92mm

    Groupset
    Rear Derailleur

    SRAM X7 Type 2, 10-speed, medium cage

    Front Derailleur

    SRAM X7, 2x10, low direct mount

    Crank

    Custom Samox, 2x10, alloy, 100mm CNC 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: Tektro Gemini, hydraulic disc, resin pads, Rear: Tektro Gemini, hydraulic disc, resin pads

    TypeTektro Gemini Hydraulic Disc

    Brake Levers

    Tektro Gemini, hydraulic

    Wheels
    Rims

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

    Spokes

    Stainless, 14g

    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""

    Riders Also Compared