The 2015 Specialized Fatboy SL is a fat/fat bike with an aluminum Specialized M4 Premium frame. The frame has a Platinum  Ano finish.

It was released in 2015 and costs $6,000 brand new. Due to the frame materials and other factors, we estimate that this bike weighs around 30 pounds. The Fatboy SL is fully rigid.

Components

The Fatboy SL comes with SRAM XX1 components, including an aluminum, forged, four-bolt Specialized Stout XC stem, an integrated, sealed Campy headset and trigger SRAM XX1 shifters.

Drivetrain

The Fatboy SL has 11 speeds and has SRAM XX1 rear cogs and a SRAM XX1 derailleur.

Wheels

It comes with Specialized Ground Control Fat tires ( x ) and carbon, tubeless HED Big Deal rims.

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Specs

Type Fat, Fat
MSRP $6,000
Year 2015
Alt. Names FATBOYSL, FatboySL, FATBOY SL, Fatboy SL