2018 Specialized

S-Works Fatboy

A 26″ carbon frame rigid fat bike with ultra high-end components.
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Manufacturer Price

$7,000
FrameCarbon
SuspensionRigid
ForkCarbon
Wheels26″ Carbon
Drivetrain1 × 11
GroupsetXX1, Race Face
BrakesHydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
S-Works Fatboy
Other Fat bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

22 mph

S-Works Fatboy

23 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

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Reviews
BikeRadar
Specialized Fatboy Comp Carbon review

May 2016 · Seb Stott

Despite a couple of component niggles, the Fatboy has huge potential to dominate any fat bike race. Buy if you want a fast, capable and well-appointed fatty to race with

Highs
  • Light, speedy, well finished and perfect for mile-munching

Lows
  • You'll want to switch the stock tyres for snow, 203mm rotors are overkill, gearing is a little narrow

Read Review

Enduro Mountainbike Magazine
Specialized Fatboy 20 Review: Kids Bike on Steroids

Mar 2016 · Evan Phillips

Fatbikes are polarizing, especially for our kids. But are they any good for lightweight shredders? We find out with the Specialized Fatboy 20.

Read Review

BIKE Magazine
Specialized Fatboy Expert review - BIKE

Feb 2015

We reviewed Specialized's Fatboy Expert on the frigid, snowy trails of Marquette, MI to see how it held up to proper winter conditions.

Read Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

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

BB StandardPF30, Press Fit

Fork

Carbon, 46mm offset, tapered steerer, 150mm axle spacing

Bottom Bracket

PF30

Stem

Syntace F109, 6-degree rise, 31.8mm clamp

Handlebar

Specialized Trail, FACT carbon, 6-degree upsweep, 8-degree backsweep, 27mm rise, 750mm width, 31.8mm

Saddle

Body Geometry Phenom Expert, hollow titanium rails, 143mm

Seatpost

Race Face Next SL, 0mm offset, 30.9mm

TypeRigid

Pedals

Specialized Dirt Pedals

Grips

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

Groupset
Rear Derailleur

SRAM XX1 Type 2.1, 11-speed

Crank

Race Face Next SL, 28T

Shifters

SRAM XX1, trigger, 11-speed

Cassette

SRAM XX1, 11-speed, 10-42t

Chain

SRAM XX1, 11-speed

Brakes

Front: SRAM Guide RS carbon, hydraulic disc, organic pads, carbon lever, Guide S4 4-piston caliper, 200/180mm rotor, Rear: SRAM Guide RS carbon, hydraulic disc, organic pads, carbon lever lever, Guide S4 4-piston caliper, 180/160mm rotor

TypeHydraulic Disc

Wheels
Rims

HED Big Deal, carbon fiber construction, single wall, tubeless-ready, 26" x 85mm-wide, 32h

Spokes

DT Swiss Revolution

Front Hub

DT Swiss Big Ride 350, 6-bolt, 15x150mm thru-axle, 32h

Rear Hub

DT Swiss Big Ride 350, 6-bolt disc, 12x197mm thru-axle, SRAM XD driver, 32h

Tires

Front: Fast Trak, Control Casing, 120 TPI, 2Bliss Ready, folding bead, 26x4.0", Rear: Fast Trak, Control Casing, 120 TPI, 2Bliss Ready, folding bead, 26x4.0"

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Last updated November 6
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