Specialized Fatboy SL

Specialized Fatboy SL
Gloss Hyper/Black/White
Please select options


Specialized's Fatboy SL is a supermodel in the plus-sized world. You'll get caught drooling over the smooth welds and sweeping curves of the M4 alumium frame, and the beautifully smooth and simple FACT carbon fork. Where it really counts is the SL's giant pair of shoes—massive 4.6-inch Ground Control tires and super light HED carbon wheels that devour any terrain. The SL is dressed up with SRAM's top end XX1 1x11 drivetrain, an incredible Race Face Next SL carbon crankset and Magura's petite yet powerful MT8 hydraulic brakes. A Specialized carbon handlebar and seatpost complete the build. The Fatboy SL is the perfect combination of light and fat that's just begging to get out on the trails and shred.


Frame Specialized M4 butted aluminum
Fork Specialized FACT carbon
Rims/Wheels HED Big Deal, carbon
Hubs Specialized MTB disc, aluminum
Spokes Butted stainless-steel
Tires Specialized Ground Control, 26 x 4.6-inches
Crankset Race Face Next SL
Chainrings 30T
Rear Derailleur SRAM XX1
Rear Cogs SRAM XX1, 11-speed, 11-42
Shifters SRAM XX1
Handlebars Specialized flat, carbon
Tape/Grips Specialized Sip Grip
Stem Specialized 3D forged aluminum
Brake Levers Magura MT8, carbon lever
Brakes Magura MT8 disc, Storm SL rotors
Saddle Body Geometry Phenom Expert, Ti rails
Seatpost Specialized FACT carbon

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Gloss Hyper/Black/White / Medium 888818005154 99515-1103 99515-1103