Fatboy SE
Part No.  

Fatboy SE

Part No.  115495
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Fatboy SE
Overview
Technical Specifications
Geometry
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.
  • Durable 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.

Technical Specifications

FRAMESET
SEAT BINDER Alloy, 31.8mm
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
WHEELS
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
INNER TUBES Standard, Presta valve
SPOKES Stainless, black, 14g
FRONT TIRE Ground Control Fat, 60 TPI, wire bead, 26x4.6""
RIMS Specialized 26"" disc front, 21mm depth, 86mm internal width, 32h
REAR TIRE Ground Control Fat, 26x4.6"", 60TPI, wire bead
DRIVETRAIN
BOTTOM BRACKET BB30, sealed cartridge bearings
CHAIN KMC X10EPT Anti-Rust, 10-speed, w/reusable MissingLink
CRANKSET Custom Samox, forged alloy, 2x10, Cr-Mo spindle, 104mm BCD spider
CASSETTE Sunrace, 10-speed, 11-36t
SHIFT LEVERS SRAM X5, 10-speed, trigger
FRONT DERAILLEUR SRAM X5, low direct-mount, 2x10
REAR DERAILLEUR SRAM X5, long cage, 10-speed
COCKPIT
SADDLE Body Geometry Henge Sport, steel rails, 143mm
SEATPOST Alloy, 12.5mm offset, 2-bolt clamp, 27.2mm
GRIPS Specialized MTB Grip, lock-on
HANDLEBARS Double-butted alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 750mm width, 31.8mm
STEM Ahead 3D-forged alloy, 31.8mm clamp, 6-degree rise
BRAKES
FRONT BRAKE Tektro Aries, mechanical disc, organic pads, 160mm rotor 
REAR BRAKE Tektro Aries, mechanical disc, organic pads, 160mm rotor 
ACCESSORIES
PEDALS Specialized Dirt Pedals
SUSPENSION
FORK Specialized, alloy, air-formed legs, tapered alloy steererer, 135mm hub spacing, open quick-release dropouts

Geometry

Geometry Chart

Fatboy - Geometry

S M L XL
  S M L XL
Crank Length 170mm 175mm 175mm 175mm
Stem Length 60mm 60mm 70mm 70mm
Saddle Width 143mm 143mm 143mm 143mm
Handlebar Width 750mm 750mm 750mm 750mm
Seat Post Length 350mm 350mm 400mm 400mm
Reach 395mm 420mm 437mm 458mm
Stack 590mm 600mm 614mm 628mm
Wheelbase 1083mm 1111mm 1133mm 1159mm
Bike Stand-Over Height 754mm 786mm 812mm 840mm
Head-Tube Length 110mm 120mm 135mm 150mm
Front-Center 634mm 663mm 685mm 711mm
Fork Rake/Offset 46mm 46mm 46mm 46mm
Head-Tube Angle 70.5° 70.5° 70.5° 70.5°
Trail 84mm 84mm 84mm 84mm
B-B Height 316mm 316mm 316mm 316mm
Chain-Stay Length 455mm 455mm 455mm 455mm
Fork Length (full) 467mm 467mm 467mm 467mm
Seat-Tube Angle 73° 73° 73° 73°
B-B Drop 60mm 60mm 60mm 60mm
Seat-Tube Length 394mm 445mm 483mm 533mm
Top-Tube Length (horizontal) 576mm 603mm 625mm 650mm