Fatboy Pro Trail

When it comes to trail riding, traction, floatation, and control are the name of the game. So it comes as no surprise to us that we're seeing more and more trail riders getting rowdy on fat bikes these days, which is why we created our Fatboy Pro Trail specifically for trail riding. It features a durable and efficient carbon one-by drivetrain and powerful Shimano brakes that'll stop on a dime. And to soak bumps, hits, and chatter, we equipped this Fatboy with an air sprung suspension fork from RockShox. Go faster, go fatter.

When it comes to trail riding, traction, floatation, and control are the name of the game. So it comes as no surprise to us that we're seeing more and more trail riders getting rowdy on fat bikes these days, which is why we created our Fatboy Pro Trail specifically for trail riding. It features a durable and efficient carbon one-by drivetrain and powerful Shimano brakes that'll stop on a dime. And to soak bumps, hits, and chatter, we equipped this Fatboy with an air sprung suspension fork from RockShox. Go faster, go fatter.

Select

Part No:
    • FRAME

      Specialized M4 aluminum, fully-butted tubing w/ smooth welds, tapered head tube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger

    • FORK

      RockShox Bluto RL, Solo Air spring, Motion Control damping,external rebound adjust, tapered alloy steerer, mag lowers, 32mm alloy stanchions, disc mount, QR 15mm thru-axle for 150mm hub spacing

    • HEADSET

      1-1/8" upper, 1-1/2" lower, threadless, Campy style, cartridge bearings

    • STEM

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

    • HANDLEBARS

      Specialized, 7075 alloy, 8-backsweep, 6-upsweep, 10mm rise, 31.8mm

    • GRIPS

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

    • FRONT BRAKE

      Shimano Deore XT, hydraulic disc, metallic pads w/ fins, Ice-Tech rotor

    • REAR BRAKE

      Shimano Deore XT, hydraulic disc, metallic pads w/ fins, Ice-Tech rotor

    • BRAKE LEVERS

      Shimano XT, hydraulic, reach adjust

    • REAR DERAILLEUR

      SRAM X01 Type 2.1, 11-speed, carbon cage

    • SHIFT LEVERS

      SRAM X01, 11-speed, trigger

    • CASSETTE

      SRAM X1, 11-speed, 10-42t

    • CHAIN

      KMC X11L, 11-speed, w/ reusable MissingLink

    • CRANKSET

      Race Face Next SL, PF30 BB, 100mm spindle, 28T direct mount ring

    • PEDALS

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

    • RIMS

      Specialized Stout XC 90, disc, alloy, single wall, 90mm wide, sleeve joint, hookless design, 32h

    • FRONT HUB

      Specialized Stout XC 150, Hi Hi disc, double-sealed cartridge bearings, 15mm thru-axle, 32h

    • REAR HUB

      Specialized Stout XC 190, Hi Hi disc, alloy, sealed cartridge bearings, QR, 32h

    • SPOKES

      Stainless, butted, 2.0/1.8/2.0mm, black

    • FRONT TIRE

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

    • REAR TIRE

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

    • INNER TUBES

      Standard, Presta valve

    • SADDLE

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

    • SEATPOST

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

    • SEAT BINDER

      Command Post, single bolt, 34.9mm

  • The frame features an M4 alloy construction that provides the ideal blend of efficiency and durability, while the geometry creates a roomy top tube and short chainstays for easy climbing and confident descending.
  • The RockShox Bluto RL fork is air sprung for smooth, plush travel, while featuring strong and stiff 32mm alloy stanchions and an external rebound adjust for on-the-fly fine-tuning of your suspension performance.
  • Our Stout XC 90 alloy rims have been laced to Stout XC hubs to form a wheelset that's dependable, rugged, and efficient. So whether you're trail riding or plowing through the snow, these wheels will be the perfect mix of performance and strength.
  • 26x.4.6" Ground Control tires help soak up bumps, while also providing a game-changing level of traction, control, and floatation for better handling out in the wild.
  • A Race Face Next SL carbon one-by crankset provides plenty of security from chain drop, while also leading the way for an efficient, lightweight, and simplified drivetrain with plenty of gear range for hard drives on the flats and climbs.

Geometry

  S M L XL
Stack 590mm 600mm 614mm 628mm
Reach 395mm 420mm 437mm 458mm
Head-Tube Length 110mm 120mm 135mm 150mm
Head-Tube Angle 70.5° 70.5° 70.5° 70.5°
B-B Height 316mm 316mm 316mm 316mm
B-B Drop 60mm 60mm 60mm 60mm
Trail 84mm 84mm 84mm 84mm
Fork Length (full) 467mm 467mm 467mm 467mm
Fork Rake/Offset 46mm 46mm 46mm 46mm
Front-Center 634mm 663mm 685mm 711mm
Chain-Stay Length 455mm 455mm 455mm 455mm
Wheelbase 1083mm 1111mm 1133mm 1159mm
Top-Tube Length (horizontal) 576mm 603mm 625mm 650mm
Bike Stand-Over Height 754mm 786mm 812mm 840mm
Seat-Tube Length 394mm 445mm 483mm 533mm
Seat-Tube Angle 73° 73° 73° 73°
Handlebar Width 750mm 750mm 750mm 750mm
Stem Length 60mm 60mm 70mm 70mm
Crank Length 170mm 175mm 175mm 175mm
Seatpost Length 350mm 350mm 400mm 400mm

  • Stack 590mm
    Reach 395mm
    Head-Tube Length 110mm
    Head-Tube Angle 70.5°
    B-B Height 316mm
    B-B Drop 60mm
    Trail 84mm
    Fork Length (full) 467mm
    Fork Rake/Offset 46mm
    Front-Center 634mm
    Chain-Stay Length 455mm
    Wheelbase 1083mm
    Top-Tube Length (horizontal) 576mm
    Bike Stand-Over Height 754mm
    Seat-Tube Length 394mm
    Seat-Tube Angle 73°
    Handlebar Width 750mm
    Stem Length 60mm
    Crank Length 170mm
    Seatpost Length 350mm
    View S Geometry
  • Stack 600mm
    Reach 420mm
    Head-Tube Length 120mm
    Head-Tube Angle 70.5°
    B-B Height 316mm
    B-B Drop 60mm
    Trail 84mm
    Fork Length (full) 467mm
    Fork Rake/Offset 46mm
    Front-Center 663mm
    Chain-Stay Length 455mm
    Wheelbase 1111mm
    Top-Tube Length (horizontal) 603mm
    Bike Stand-Over Height 786mm
    Seat-Tube Length 445mm
    Seat-Tube Angle 73°
    Handlebar Width 750mm
    Stem Length 60mm
    Crank Length 175mm
    Seatpost Length 350mm
    View M Geometry
  • Stack 614mm
    Reach 437mm
    Head-Tube Length 135mm
    Head-Tube Angle 70.5°
    B-B Height 316mm
    B-B Drop 60mm
    Trail 84mm
    Fork Length (full) 467mm
    Fork Rake/Offset 46mm
    Front-Center 685mm
    Chain-Stay Length 455mm
    Wheelbase 1133mm
    Top-Tube Length (horizontal) 625mm
    Bike Stand-Over Height 812mm
    Seat-Tube Length 483mm
    Seat-Tube Angle 73°
    Handlebar Width 750mm
    Stem Length 70mm
    Crank Length 175mm
    Seatpost Length 400mm
    View L Geometry
  • Stack 628mm
    Reach 458mm
    Head-Tube Length 150mm
    Head-Tube Angle 70.5°
    B-B Height 316mm
    B-B Drop 60mm
    Trail 84mm
    Fork Length (full) 467mm
    Fork Rake/Offset 46mm
    Front-Center 711mm
    Chain-Stay Length 455mm
    Wheelbase 1159mm
    Top-Tube Length (horizontal) 650mm
    Bike Stand-Over Height 840mm
    Seat-Tube Length 533mm
    Seat-Tube Angle 73°
    Handlebar Width 750mm
    Stem Length 70mm
    Crank Length 175mm
    Seatpost Length 400mm
    View XL Geometry