Fatboy Expert Carbon
Part No.  

Fatboy Expert Carbon

Part No.  
Please select an option
Fatboy Expert Carbon
Technical Specifications

We know that we're not blowing any minds when we say carbon is pretty cool. Compared to an alloy frame construction, it keeps weight down, does an exceptional job of absorbing bumps and vibrations, and it allows us to take more liberties to fine tune the ride quality. For these reasons, we made the Fatboy Expert Carbon.

It features an immaculate FACT 10m carbon layup that performs the aforementioned, while also allowing us to integrate fully internal cable routing. And in keeping with the theme of blending performance with efficiency, we built the bike up with a top-notch, X01 one-by drivetrain and SRAM's fan-favorite Guide R brakes. The Fatboy Expert brings new efficiency and fun to the fat bike category.

  • An immaculate FACT carbon fiber construction ensures that the frame is lightweight and plenty stiff in all the right places. Internal cable routing is also incorporated, ensuring that slush, sand, snow, or dirt will have no bearing on performance out on the trail.
  • A FACT carbon fiber fork provides tons of compliance and absorbs chatter, while simultaneously keeping the overall weight of the bike down.
  • HED Big Deal carbon wheels are light, fast, and 85mm-wide to make sure that you get all of the traction and floatation that fat bikes are known for, only without a weight penalty or having to make any sacrifices to climbing prowess.

Technical Specifications

CHAIN SRAM XX1, 11-speed
CRANKSET Race Face Next SL
SHIFT LEVERS SRAM X01, trigger, 11-speed,
CASSETTE SRAM XG-1180, 11-speed, 10-42t
REAR DERAILLEUR SRAM X01, carbon cage, 11-speed
FORK Carbon, 46mm offset, tapered steerer, 150mm axle spacing
FRONT HUB Stout Pro 150, sealed cartridge bearings, 6-bolt disc, 15x1150mm, 32h
REAR HUB Stout XC Pro, disc alloy, SRAM XD driver body, sealed cartridge bearings, 12x197mm thru-axle, 32h
INNER TUBES Standard, Presta valve
SPOKES Stainless, butted, 2.0/1.8/2.0mm, black
RIMS HED Big Deal, carbon fiber construction, single wall, tubeless-ready, 26" x 85mm-wide, 32h
FRONT TIRE Ground Control Fat, Control casing, 120 TPI, Aramid folding bead, 2Bliss Ready, 26x4.0"
REAR TIRE Ground Control Fat, Control casing, 120 TPI, Aramid folding bead, 2Bliss Ready, 26x4.0"
SADDLE Phenom Expert, Adaptive Edge design, hollow titanium rails, 143mm
SEATPOST Race Face Next SL, 0mm offset, 30.9mm
STEM Specialized XC, 3D-forged alloy, 4-bolt, 6-degree rise
HANDLEBARS Specialized Mini-rise, 7050 alloy, 8-backsweep, 6-upsweep, 10mm rise, 750mm width, 31.8mm clamp
GRIPS Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
FRONT BRAKE SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 200/180mm rotor
REAR BRAKE SRAM Guide R, hydraulic disc, organic pads, Guide S4 4-piston caliper, 180/160mm rotor
PEDALS Specialized Dirt Pedals
SEAT BINDER Alloy, 34.9mm
FRAME FACT 10m, full carbon frame, 12x197mm thru-axle rear, internal cable routing, ISCG XC tabs


Geometry Chart

Fatboy - Geometry

  S M L XL
Reach 395mm 420mm 437mm 458mm
Top Tube Length, Horizontal 579mm 604mm 626mm 651mm
Stack 602mm 602mm 617mm 632mm
Wheelbase 1088mm 1113mm 1135mm 1161mm
Chainstay Length 455mm 455mm 455mm 455mm
Front Center 640mm 665mm 687mm 713mm
BB Drop 60mm 60mm 60mm 60mm
BB Height 307mm 307mm 307mm 307mm
Seat Tube Angle 73° 73° 73° 73°
Head Tube Angle 70.5° 70.5° 70.5° 70.5°
Seat Tube Length 394mm 434mm 470mm 520mm
Head Tube Length 94mm 94mm 110mm 125mm
Bike Standover Height 738.5mm 752mm 778.3mm 807.5mm
Fork Rake/Offset 47mm 47mm 47mm 47mm
Fork Length, Full 496mm 496mm 496mm 496mm
Trail 80mm 80mm 80mm 80mm