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Specialized Fatboy

Specialized Fatboy
  • Color: Gloss Solid Blue/Cyan/Blue Fade
  • Color: Gloss White/Black/Green Fade
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This item is not permitted to be shipped, however it can be purchased online and picked up at your convenience.


Skinny tires are for the road; Specialized’s Fatboy is for everything else. This lightweight aluminum frame is mated to a FACT carbon fork on 4.6-inch Ground Control tires that devour everything in your path. The super-wide aluminum rims give you stability and durability to roll through the most root-filled trail like it’s butter. With SRAM X7 drivetrain components providing slick shifting on all-day adventures or snowy cruises, you’ll be sure you get the push you need when speed’s what you’re after. And, you can bring it all back down to earthly limits thanks to the Tektro Gemini hydraulic disc brakes. Trail? Sand? Snow? The Fatboy owns it all.


Frame Specialized M4 aluminum
Fork FACT carbon monocoque, tapered steerer, 135mm hub spacing, open QR dropouts
Rims/Wheels Specialized Stout XC 90, aluminum
Hubs See rims/wheels
Spokes 14g stainless-steel
Tires Specialized Ground Control Fat, 26 x 4.6
Crankset Specialized Stout XC Pro, aluminum
Chainrings 28t
Rear Derailleur SRAM X7
Rear Cogs Custom Sunrace, 10-speed: 11-40
Shifters SRAM X7
Handlebars Specialized Stout, aluminum
Tape/Grips Specialized Sip Grip
Stem Specialized Stout XC, aluminum
Brake Levers Tektro Gemini
Brakes Tektro Gemini, hydraulic-disc
Saddle Body Geometry Henge Sport
Seatpost aluminum

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Gloss Solid Blue/Cyan/Blue Fade / Small 888818063420 99516-7002
Gloss Solid Blue/Cyan/Blue Fade / Medium 888818055203 99516-7003
Gloss Solid Blue/Cyan/Blue Fade / Large 888818056569 99516-7004
Gloss Solid Blue/Cyan/Blue Fade / X-Large 888818059300 99516-7005
Gloss White/Black/Green Fade / Small 888818063000 99516-7102
Gloss White/Black/Green Fade / Medium 888818055777 99516-7103
Gloss White/Black/Green Fade / Large 888818060665 99516-7104 34148
Gloss White/Black/Green Fade / X-Large 888818062904 99516-7105