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Fat bikes sometimes get a bad rap as being just for the snow or the beach. This idea…
Fat bikes sometimes get a bad rap as being just for the snow or the beach. This idea bums us out, though, because the characteristics of are Fatboy lend themselves perfectly to trail riding. That's we purpose-built the Fatboy Trail for the rigors of trail riding. The fat wheel system and geometry work in tandem to keep you planted and run it wide open, while an air sprung suspension fork from RockShox does the heavy lifting when it comes to absorbing chatter and bumps. And when you factor in an efficient one-by drivetrain and powerful brakes, you get a bike that'll help you find your limits on the trail and keep on coming back for more.
The RockShox Bluto RL fork is air sprung for smooth, plush travel, while featuring strong and stiff 32mm alloy stanchions and an external rebound adjust for on-the-fly fine-tuning of your suspension performance.
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.
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 Stout XC Pro one-by crankset features a forged alloy construction that provides plenty of security from chain drop, while also leading the way for an efficient, lightweight, and simplified drivetrain with plenty of gear range for hard drives on the flats and climbs.
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.
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
HEADSET
1-1/8"" upper, 1-1/2"" lower, threadless, Campy style, cartridge bearings
SEAT BINDER
Alloy, 31.8mm
FORK
RockShox Bluto RL, Solo Air spring, Motion Control damping, external rebound adjust, mag lowers, tapered alloy steerer, 32mm alloy stanchions, disc mount, QR 15mm thru-axle for 150mm hub spacing
FRONT HUB
Specialized Stout XC 150, Hi Hi disc, double-sealed cartridge bearings, 15mm thru-axle, 32h
REAR HUB
Specialized Stout XC 190, Hi Hi disc, alloy, sealed cartridge bearings, QR, 32h
SPOKES
Stainless, 14g, black
FRONT TIRE
Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6""
REAR TIRE
Specialized Ground Control Fat, 120TPI, folding bead, 26x4.6""
INNER TUBES
Standard, Presta valve
RIMS
Specialized Stout XC 90, disc, alloy, single wall, 90mm wide, sleeve joint, hookless design, 32h
REAR DERAILLEUR
SRAM X7 Type 2.1, 10-speed, long cage
SHIFT LEVERS
SRAM X7, 10-speed, trigger
CASSETTE
Custom Sunrace, wide range, 10-speed, 11-40t
CRANKSET
Specialized Stout XC Pro, forged alloy, 30mm alloy spindle, 100mm spindle width, 28T, 76mm BCD spider
BOTTOM BRACKET
Samox, PF30, sealed cartridge
CHAIN
KMC X10L, 10-speed, w/ reusable MissingLink
SEATPOST
TranzX YSP02 dropper, infinite adjust, external cable routing, remote lever, 30.9mm, S: 100mm travel, M/L/XL: 120mm travel
STEM
Specialized Stout XC, 3D forged alloy, 4-bolt, 6-degree rise, anti-corrosion hardware
HANDLEBARS
Specialized Stout XC, double-butted 6061 alloy, 9-degree backsweep, 5-degree upsweep, 15mm rise, 31.8mm
GRIPS
Specialized Sip Grip, light lock-on, half-waffle, S/M: regular thickness, L/XL: XL thickness
SADDLE
Body Geometry Henge Sport, steel rails, 143mm
FRONT BRAKE
Tektro Gemini, hydraulic disc, resin pads, I-spec compatible
REAR BRAKE
Tektro Gemini, hydraulic disc, resin pads, I-spec compatible
BRAKE LEVERS
Tektro Gemini, hydraulic, reach adjust, I-spec compatible
PEDALS
Nylon, 1 pc. body, 9/16"", w/ reflectors
* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.
For safety warning please refer to the documentation in the Manual Downloads section of this page.
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