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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.
- The SRAM 11-speed groupset features a wide gear range that delivers climbing and descending efficiency in spades. On top of this, the one-by setup is notorious for being next to impossible to drop a chain with, plus it provides a significant weight savings in comparison to a standard two-by setup.
Manual Downloads
Technical Specifications
FRAMESET
| 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 |
| SEAT BINDER | Alloy, 31.8mm |
SUSPENSION
| FORK | Specialized, alloy, air-formed legs, tapered alloy steerer, 135mm hub spacing, open quick-release dropouts |
WHEELS
| RIMS | Stout XC 80, 26", 76mm internal width, 32h, tubeless ready |
| FRONT TIRE | Ground Control Fat, 60 TPI, wire bead, 26x4.6" |
| FRONT HUB | Stout 135, loose ball bearings, 10x135 QR, 32h |
| REAR HUB | Stout 190, sealed cartridge bearings, 10x190mm QR, 32h |
| SPOKES | Stainless, 14g |
| REAR TIRE | Ground Control Fat, 60 TPI, wire bead, 24x4.6" |
| INNER TUBES | Standard, Presta valve |
DRIVETRAIN
| SHIFT LEVERS | SRAM X7, trigger |
| REAR DERAILLEUR | SRAM GX, Type 2.1, long cage, 10-speed |
| CASSETTE | Sunrace, 10-speed, 11-42t |
| CHAIN | KMC X10, 10-speed w/ Missing Link™ |
| BOTTOM BRACKET | PF30 BB, 100mm |
| CHAINRINGS | 28T, steel |
| CRANKSET | Stout direct mount, PF30, 28t |
COCKPIT
| 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 Comp, hollow Cr-Mo rails, 143mm |
| SEATPOST | Alloy, 12mm offset, 2-bolt clamp, 30.9mm |
BRAKES
| FRONT BRAKE | Tektro Aries, mechanical disc, organic pad, 203/180mm rotor |
| REAR BRAKE | Tektro Aries, mechanical disc, organic pad, 180/160mm rotor |
ACCESSORIES
| PEDALS | Specialized Platform, Cr-Mo, 9/16" spindle |
* Specifications are subject to change without notice
Geometry
Fatboy - Geometry
| S | M | L | XL | |
|---|---|---|---|---|
| Crank Length | 170MM | 175MM | 175MM | 175MM |
| Stem Length | 60MM | 60MM | 70MM | 70MM |
| Seatpost Length | 350MM | 350MM | 400MM | 400MM |
| Saddle Width | 143mm | 143mm | 143mm | 143mm |
| Handlebar Width | 750MM | 750MM | 750MM | 750MM |
| Reach | 395mm | 420mm | 437mm | 458mm |
| Top Tube Length, Horizontal | 576mm | 603mm | 625mm | 650mm |
| Stack | 590mm | 600mm | 614mm | 628mm |
| Wheelbase | 1083mm | 1111mm | 1133mm | 1159mm |
| Chainstay Length | 455mm | 455mm | 455mm | 455mm |
| Front Center | 634mm | 663mm | 685mm | 711mm |
| BB Drop | 60mm | 60mm | 60mm | 60mm |
| BB Height | 316mm | 316mm | 316mm | 316mm |
| Seat Tube Angle | 73° | 73° | 73° | 73° |
| Head Tube Angle | 70.5° | 70.5° | 70.5° | 70.5° |
| Seat Tube Length | 394mm | 445mm | 483mm | 533mm |
| Head Tube Length | 110mm | 120mm | 135mm | 150mm |
| Bike Standover Height | 754mm | 786mm | 812mm | 840mm |
| Fork Rake/Offset | 46mm | 46mm | 46mm | 46mm |
| Fork Length, Full | 467mm | 467mm | 467mm | 467mm |
| Trail | 84mm | 84mm | 84mm | 84mm |