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Fatboy

2019 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, like a SRAM 11-speed one-by drivetrain, that are low-maintenance and eager to perform season after season. Have more fun—go fat.

Technical Specifications

FRAMESET

FRAME

Specialized M5 Aluminum, fully butted w/ Smooth Welds, tapered head tube and seat tube, forged post-mount 160mm disc dropouts, internal routing, forged bottom bracket shell, 197x12mm rear thru-axle

SUSPENSION

FORK

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

COCKPIT

HANDLEBARS

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

STEM

Specialized, 3D-forged alloy, 4-bolt, 7-degree rise

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

SEAT BINDER

Alloy, bolt-type, 34.9mm

BRAKES

FRONT BRAKE

SRAM Level T, hydraulic disc, 200/180mm

REAR BRAKE

SRAM Level T, hydraulic disc, 180/160mm

DRIVETRAIN

SHIFT LEVERS

SRAM NX, 11-speed

REAR DERAILLEUR

SRAM NX, 11-speed

CASSETTE

SRAM PG-1130, 11-speed, 11-42t

CRANKSET

Race Face Ride

CHAINRINGS

Steel, 28T

BOTTOM BRACKET

Race Face, threaded BSA

CHAIN

KMC X11EPT, 11-speed, anti-corrosion coating w/ reusable Missing Link™

WHEELS & TIRES

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, 32h

SPOKES

Stainless, 14g

FRONT TIRE

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

REAR TIRE

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

INNER TUBES

Presta, 40mm valve

ACCESSORIES

PEDALS

Specialized Dirt

* 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

SMLXL
Crank Length170MM175MM175MM175MM
Handlebar Width750MM750MM750MM750MM
Stem Length60MM60MM70MM70MM
Saddle Width143mm143mm143mm143mm
Seatpost Length350MM350MM400MM400MM
Bike Standover Height, Actual765mm786mm813mm847mm
Stack602mm602mm617mm632mm
Reach395mm420mm437mm458mm
Head Tube Length94mm94mm110mm125mm
Head Tube Angle71°71°71°71°
BB Height316mm316mm316mm316mm
BB Drop60mm60mm60mm60mm
Trail83mm83mm83mm83mm
Fork Length, Full496mm496mm496mm496mm
Fork Rake/Offset47mm47mm47mm47mm
Front Center640mm665mm687mm713mm
Chainstay Length455mm455mm455mm455mm
Wheelbase1088mm1113mm1135mm1161mm
Top Tube Length, Horizontal579mm604mm626mm651mm
Seat Tube Length394mm434mm470mm520mm
Seat Tube Angle73mm73mm73mm73mm
Geometry

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