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Fatboy

2017 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 that are low-maintenance and eager to perform season after season. Have more fun—go fat.

Technical Specifications

FRAMESET

FRAME

M5 Aluminum, fully butted w/smooth welding, tapered head tube and seat tube, 100mm of travel, forged post mount 160mm disc drop outs, internal routing, forged bottom bracket shell, 197x12mm thru-axle rear

SEAT BINDER

Alloy, 31.8mm

WHEELS

RIMS

Specialized 26"" disc front, 21mm depth, 86mm internal width, 32h

FRONT TIRE

Ground Control Fat, Control casing, 120 TPI, Aramid folding bead, 2Bliss Ready, 26x4.6""

SPOKES

Stainless, black, 14g

REAR HUB

Stout XC 197, disc alloy, sealed cartridge bearings, 12x197mm thru-axle, 32h

FRONT HUB

Specialized Stout XC, alloy disc, double-sealed cartridge bearings, 15x150mm thru-axle, 32h

INNER TUBES

Standard, Presta valve

REAR TIRE

Ground Control Fat, Control casing, 120 TPI, Aramid folding bead, 2Bliss Ready, 26x4.6""

SUSPENSION

FORK

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

DRIVETRAIN

CASSETTE

Sunrace, 10-speed, 11-42t

SHIFT LEVERS

SRAM X7, 10-speed, trigger

REAR DERAILLEUR

SRAM X7 Type 2.1, long cage, 10-speed

CRANKSET

RaceFace Aeffect Cinch, 28T chainring, 11-speed, threaded BB

CHAIN

10-speed, extra lightweight hollow outer links w/reusable Missing Link # CL559R

COCKPIT

GRIPS

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

HANDLEBARS

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

STEM

Specialized Alloy, 3D forged, 4-bolt, 6-degree

SEATPOST

Specialized 2-bolt head, forged alloy, 8mm offset, micro-adjust, 30.9mm

SADDLE

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

ACCESSORIES

PEDALS

Specialized Dirt Pedals

BRAKES

FRONT BRAKE

Tektro Gemini, hydraulic disc, resin pads, i-Spec compatible, 180mm rotor

REAR BRAKE

Tektro Gemini, hydraulic disc, resin pads, i-Spec compatible, 160mm rotor

* 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
Seat-Tube Angle73°73°73°73°
Head-Tube Length110mm120mm135mm150mm
Head-Tube Angle70.5°70.5°70.5°70.5°
Chain-Stay Length455mm455mm455mm455mm
Front-Center634mm663mm685mm711mm
B-B Drop60mm60mm60mm60mm
B-B Height316mm316mm316mm316mm
Bike Stand-Over Height754mm786mm812mm840mm
Fork Length (full)467mm467mm467mm467mm
Top-Tube Length (horizontal)576mm603mm625mm650mm
Seat-Tube Length394mm445mm483mm533mm
Stack590mm600mm614mm628mm
Reach395mm420mm437mm458mm
Trail84mm84mm84mm84mm
Fork Rake/Offset46mm46mm46mm46mm
Wheelbase1083mm1111mm1133mm1159mm
Geometry

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