Fatboy Comp Carbon

Every now and again, we're all faced with going on a diet, and the same is true for our Fatboy. With the new Fatboy Comp Carbon, we've elevated the fat bike platform to a higher level of performance, strength, and efficiency.

It features a sophisticated 10m carbon construction that's lightweight, ultra-compliant, and stiff in all the right places for the climbs. The layup also allowed us to integrate internal cable routing to keep things clean and simple through nasty conditions.

Sprinkle in a durable one-by drivetrain and some near bombproof alloy wheels, and you have a bike that will give new purpose to winter and more fun to springtime.

Technical Specifications

FRAMESET

FRAME

Specialized FACT 10m, 12x197mm thru-axle rear, internal cable routing, ISCG XC tabs

SEAT BINDER

Alloy, 34.9mm

SUSPENSION

FORK

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

WHEELS

RIMS

Stout XC 80, 26", alloy, 76mm internal width, disc-specific

FRONT HUB

Stout Pro 150, sealed cartridge bearings, 6-bolt disc, 15x150mm, 32h

REAR HUB

Stout Pro 197, sealed cartridge bearings, 6-bolt disc, 12x197mm, SRAM XD driver body, 32h

SPOKES

Stainless, 14g

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"

INNER TUBES

Presta, 40mm valve

DRIVETRAIN

REAR DERAILLEUR

SRAM GX Eagle, 12-speed

SHIFT LEVERS

SRAM GX Eagle, trigger, 12-speed

CASSETTE

SRAM GX Eagle, 12-speed, 10-50t

CHAIN

SRAM GX Eagle, 12-speed w/ PowerLock®

CRANKSET

Race Face Next R crank

CHAINRINGS

Steel, 30T

BOTTOM BRACKET

PF30

COCKPIT

STEM

Specialized Trail, 3D-forged alloy, 4-bolt, 6-degree rise

HANDLEBARS

Stout XC, double-butted alloy, 8-degree backsweep, 6-degree upsweep, 10mm rise, 31.8mm

GRIPS

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

SADDLE

Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm

SEATPOST

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

BRAKES

FRONT BRAKE

SRAM Level TL hydraulic disc, organic pads, 200/180mm rotors

REAR BRAKE

SRAM Level TL hydraulic disc, organic pads, 180/160mm rotors

ACCESSORIES

PEDALS

Specialized Platform, Cr-Mo, 9/16" spindle

* 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

	S	M	L	XL
Crank Length	170MM	175MM	175MM	175MM
Handlebar Width	750MM	750MM	750MM	750MM
Stem Length	60MM	60MM	75MM	75MM
Saddle Width	143mm	143mm	143mm	143mm
Seatpost Length	350MM	350MM	400MM	400MM
Stack	602mm	602mm	617mm	632mm
Reach	395mm	420mm	437mm	458mm
Head Tube Length	94mm	94mm	110mm	125mm
Head Tube Angle	70.5°	70.5°	70.5°	70.5°
BB Height	307mm	307mm	307mm	307mm
BB Drop	60mm	60mm	60mm	60mm
Trail	80mm	80mm	80mm	80mm
Fork Length, Full	496mm	496mm	496mm	496mm
Fork Rake/Offset	47mm	47mm	47mm	47mm
Front Center	640mm	665mm	687mm	713mm
Chainstay Length	455mm	455mm	455mm	455mm
Wheelbase	1088mm	1113mm	1135mm	1161mm
Top Tube Length, Horizontal	579mm	604mm	626mm	651mm
Bike Standover Height	738.5mm	752mm	778.3mm	807.5mm
Seat Tube Length	394mm	434mm	470mm	520mm
Seat Tube Angle	73°	73°	73°	73°