Rigid

Specialized's Fatboy Expert Carbon is a bantamweight in the plus-sized world. By incorporating carbon, they've elevated the fat bike platform to a higher level of performance, strength, and efficiency. This trail-eating champ is built around a svelte FACT 10m Carbon frame and vibration-quieting carbon fork. Tubeless 4-inch wide Ground Control tires are wrapped around lightweight HED Big Deal carbon wheels that provide trail-shredding stability while flying up climbs. While you're eyeing new and offbeat places to roll your Fatboy, you can count on the efficient 11-speed one-by SRAM X01 drivetrain powered by carbon Race Face Next SL cranks to get you there quickly. When it's time to slow it all down and take in the scenery, SRAM Guide R brakes are on the case. Sand? Snow? Mud? The Fatboy is one light fatty that backs it up with ability.

Every now and again, we're all faced with going on a diet, and the same is true for our Fatboy. With the new Fatboy Comp Carbon, we've elevated the fat bike platform to a higher level of performance, strength, and efficiency. It features a sophisticated 10m carbon construction that's lightweight, ultra-compliant, and stiff in all the right places for the climbs. The layup also allowed us to integrate internal cable routing to keep things clean and simple through nasty conditions. Sprinkle in a durable one-by drivetrain and some near bombproof alloy wheels, and you have a bike that will give new purpose to winter and more fun to springtime. - An immaculate FACT carbon fiber construction ensures that the frame is lightweight and plenty stiff in all the right places. Internal cable routing is also incorporated; ensuring that slush, sand, snow, or dirt will have no bearing on performance out on the trail. - A FACT carbon fiber fork provides tons of compliance and absorbs chatter, while simultaneously keeping the overall weight of the bike down. - SRAM's 12-speed GX Eagle drivetrain, with a Truvativ Descendent crank, features an ultra-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.

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.