Whether you're riding on singletrack, sand, or groomed snow, free yourself of excess weight and float over the terrain on the shockingly lightweight S-Works Fatboy. By incorporating carbon, they've elevated the fat bike platform to a higher level of performance, strength, and efficiency. This go-anywhere 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, laced around DT Swiss hubs, 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 XX1 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, carbon SRAM Guide RS brakes are on the case. Sand? Snow? Mud? The Fatboy is one light fatty that backs it up with ability.