Uploaded February 2015 | Updated September 2026, 1 week ago

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Jeff Kendall, Specialized Bikes North Regional Sales Manager talks about Specialized FAT bikes during the Global Fat Bike Summit in Jackson Hole, Wyoming USA.

Looking for a bike for every type of riding conditions, be it on snow, sand, dirt single track? A FAT bike may be exactly what you're looking for.

Don’t let the large tires fool you, the Specialized "Fatboy Bike" series offers lightweight performance perfect for year round mountain biking on the snow, in the sand, through mud and around town too. FAT Bikes provide nimble handling in the most extreme conditions and a comfortable ride when heading out for a cup of coffee.

Specialized Fatboy Expert:

4.6" Ground Control tires
Specialized 29er geometry
Fully butted M4 Premium Aluminum frame w/ up to 5-inch tire
Specialized FACT carbon fork w/ 5-inch tire clearance
Fat 26" disc, alloy single wall rims
Specialized Ground Control Fat 26x4.6" tires
Custom e.thirteen, PF30, crankset w/ 100mm spindle
Shimano Deore, hydraulic disc brakes w/ dual piston
SRAM X0 Type 2, 10-speed, medium cage derailleur

Specialized Fatboy PRO:

RockShox Bluto fork
4.6" Ground Control tires
Specialized 29er geometry
Fully butted M4 Premium Aluminum frame w/ up to 5-inch tires
RockShox Bluto RL Solo Air spring shock w/ TurnKey damping
Fat 26" disc, alloy single wall rims
Specialized Ground Control Fat 26x4.6" tires
Race Face Next SL crankset w/ 100mm spindle
Shimano XT, hydraulic disc brakes w/ Ice Tech pads and rotors
SRAM X0, 11-speed derailleur w/ carbon cage

Specialized Fatboy:

Lightweight frame
4.6" Ground Control tires
Specialized 29er geometry
Fully butted M4 Premium Aluminum frame w/ up to 5-inch tire clearance
Specialized FACT carbon fork w/ 5-inch tire clearance
Fat 26" disc, alloy single wall rims
Specialized Ground Control Fat 26x4.6" tires
Custom 2x10, forged alloy crankarm, w/ 100mm spindle
Tektro Gemini, hydraulic disc brakes
SRAM X7, 10-speed, medium carbon cage derailleur

Specialized Fatboy 24:

Specialized FAT bike for youngsters.
Combines a lightweight frame and fork with 4.0
24” fully butted A1 Premium Aluminum frame
A1 Premium Aluminum fork
Fat 24” disc, alloy single wall rims
Specialized Ground Control Fat 24x4.0" tires
Forged alloy crankset, w/ 100mm spindle
Tektro Aries
Mechanical disc brakes
SRAM X4, 9-speed rear derailleur

Specialized Fatboy 20:

Specialized FAT bike for youngsters.
Combines a lightweight frame and fork with 4.0
20" fully butted A1 Premium Aluminum frame
A1 Premium Aluminum fork
Fat 20” disc, alloy single wall rims
Specialized Ground Control Fat 20x4.0" tires
Forged alloy crankset, w/ 100mm spindle f
Tektro Aries
Mechanical disc brakes
SRAM X4, 9-speed rear derailleur