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Fatboy

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2018 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

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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 thru-axle rear

SEAT BINDER

Alloy, 31.8mm

SUSPENSION

FORK

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

WHEELS

RIMS

Stout XC 80, 26", 76mm internal width, 32h, tubeless ready

FRONT HUB

Stout Pro 150, sealed cartridge bearings, 6-bolt disc, 15x1150mm, 32h

REAR HUB

Sealed cartridge bearings, 6-bolt disc, 19x197mm axle, 10-speed alloy freehub, 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

Standard, Presta valve

DRIVETRAIN

REAR DERAILLEUR

SRAM NX, long cage, 11-speed

SHIFT LEVERS

SRAM NX, trigger, 11-speed

CASSETTE

SRAM NX, 11-speed, 11-42t

CHAIN

KMC X11, 11-speed, anti-corrosion coating, w/ MissingLink™

CRANKSET

Raceface Aeffect crank, BSA

CHAINRINGS

Steel, 30T

BOTTOM BRACKET

Threaded BSA

COCKPIT

STEM

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

HANDLEBARS

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

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

BRAKES

REAR BRAKE

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

FRONT BRAKE

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

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

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SMLXL
Crank Length170MM175MM175MM175MM
Handlebar Width750MM750MM750MM750MM
Stem Length60MM60MM70MM70MM
Saddle Width143mm143mm143mm143mm
Seatpost Length350MM350MM400MM400MM
Stack590mm600mm614mm628mm
Reach395mm420mm437mm458mm
Head Tube Length110mm120mm135mm150mm
Head Tube Angle70.5°70.5°70.5°70.5°
BB Height316mm316mm316mm316mm
BB Drop60mm60mm60mm60mm
Trail84mm84mm84mm84mm
Fork Length, Full467mm467mm467mm467mm
Fork Rake/Offset46mm46mm46mm46mm
Front Center634mm663mm685mm711mm
Chainstay Length455mm455mm455mm455mm
Wheelbase1083mm1111mm1133mm1159mm
Top Tube Length, Horizontal576mm603mm625mm650mm
Bike Standover Height754mm786mm812mm840mm
Seat Tube Length394mm445mm483mm533mm
Seat Tube Angle73°73°73°73°
Geometry

Rider Reviews

  • 5
  • 3 Reviews

Fun

I’ve had this bike for two years and have used it on wooded trails in both summer and winter, single track and groomed. The shifting is quick and flawless and the bike is just a lot of fun to be on.

Would Recommend?
Yes!

Name:
Bob

Helpful?

The Fatboy is a Must

I had an entry level Gravity fatbike and after destroying the drive trains for a couple winters I upgraded to the Fatboy. This bike is a blast and may even eclipse my regular mountain bike once winter is past. It has completely revitalized my interest in cycling after the disappointment of my previous fatbike.


Name:
Junior O.

Helpful?