If having fun for the sake of having fun sounds appealing to you, "going fat" will change the way you ride forever. The security and control that the wheel system found here on our Fatboy SE provides is unparalleled. You get dramatically more traction, grip, and floatation than with traditional mountain tires, all without sacrificing much to climbing efficiency. The end result is easy to explain—you have way more fun. And to make sure of it, we built the Fatboy with a durable, no-nonsense list of components that are low-maintenance and eager to perform season after season.The frame features an M4 alloy construction that provides the ideal blend of efficiency and durability, while the geometry creates a roomy top tube and short chainstays for easy climbing and confident descending.
Our alloy fork with air-formed legs is lightweight and pairs up perfectly with the fat wheel system to soak up trail chatter and bumps.
Our Stout XC 90 alloy rims have been laced to Stout XC hubs to form a wheelset that's dependable, rugged, and efficient. So whether you're trail riding or plowing through the snow, these wheels will be the perfect mix of performance and strength.
26x.4.6" Ground Control tires help soak up bumps, while also providing a game-changing level of traction, control, and floatation for better handling out in the wild.
A custom Samox 2x10 crankset features an alloy construction to provide a crankset that offers up strength, durability, and plenty of gear range for climbing.
FRAME - Specialized M4 aluminum, fully-butted tubing w/smooth welds, tapered head tube, post-mount disc dropouts, 190mm rear hub spacing, replaceable alloy derailleur hanger
FORK - Specialized, alloy, air-formed legs, tapered alloy steerer, 135mm hub spacing, open QR dropouts
FRONT HUB - Specialized Stout XC 135, disc alloy, loose ball bearings, bolt-on axle, 32h
REAR HUB - Specialized disc, sealed cartridge bearings, alloy body cassette, 10mm steel QR, 32h
SPOKES - Stainless, 14g, black
RIMS - Specialized 26" disc front, 21mm depth, 86mm internal width, 32h
INNER TUBES - Standard, Presta valve
FRONT TIRE - Ground Control Fat, 26x4.6", 60TPI, wire bead
REAR TIRE - Ground Control Fat, 26x4.6", 60TPI, wire bead
CRANKSET - Custom Samox, forged alloy, 2x10, Cr-Mo spindle, 104mm BCD spider
BOTTOM BRACKET - BB30, sealed cartridge bearings
SHIFT LEVERS - SRAM X5, 10-speed, trigger
FRONT DERAILLEUR - SRAM X5, low direct-mount, 2x10
REAR DERAILLEUR - SRAM X5, long cage, 10-speed
CHAIN - KMC X10EPT Anti-Rust, 10-speed, w/reusable MissingLink
FRONT BRAKE - Tektro Aries, mechanical disc, organic pads, 160mm rotor
REAR BRAKE - Tektro Aries, mechanical disc, organic pads, 160mm rotor
HANDLEBARS - Double-butted alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 750mm width, 31.8mm
GRIPS - Specialized MTB Grip, lock-on
STEM - Ahead 3D-forged alloy, 31.8mm clamp, 6-degree rise
SADDLE - Body Geometry Henge Sport, steel rails, 143mm
SEATPOST - Alloy, 12.5mm offset, 2-bolt clamp, 27.2mm
SEAT BINDER - Alloy, 31.8mm
PEDALS - Specialized Dirt Pedals