Single Speed Fat Bike Frame

After five successful years, the first production carbon fat bike has been redesigned to be better than ever. Increased tire capacity now allows the Beargrease to accommodate up to 4.6" tires on 100mm rims, and most 27.5 x 4" tires. The influential ride and handling characteristics are preserved, while the chainstay length (440mm) remains unchanged.
- Rear spacing moves to 197mm, while strategic shaping of the stays create compatibility with "narrow" Q-factor fat bike cranks with o?set rings. Heel clearance remains unchanged
- New Salsa Kingpin carbon fork features four sets of Three-Pack mounts plus lowrider mounts
- Full-length internal cable and housing tunnels ease builds and maintenance
- Rear rack-compatible with Alternator rack and Rack-Lock seat collar
- Headset included

Why Choose Us?
Precision Engineering for the Pure Ride.​ We specialize in high-performance carbon fat bike frames built for simplicity and strength. Our single-speed frames are not adaptations; they are purpose-engineered from the ground up. We use premium aerospace-grade carbon fiber and advanced lay-up techniques to create a frame that is exceptionally stiff for efficient power transfer, yet compliant enough to absorb trail chatter. Our patented sliding dropout system guarantees perfect chain alignment and tension every time. From demanding winter trails to sandy beaches, our frames deliver unmatched reliability, minimalist aesthetics, and the ultimate direct-connection ride feel. Choose the frame crafted by riders, for riders.