Onyx Vesper Fat Bike Rear Hub

Unlike traditional hubs that use pawls to click into place, the Onyx Vesper uses a sprag clutch that engages instantly without any lag. This provides immediate power transfer the moment you pedal, eliminating the 'dead zone' you feel in standard hubs.

Yes. Because the sprag clutch mechanism does not rely on a ratcheting system, there is no clicking or buzzing sound when you stop pedaling. It offers a completely silent ride, which many riders find enhances the experience of being out on the trail.

This hub is designed for a 12x197mm axle spacing, which is a common standard for modern fat bikes. Please verify your frame's rear spacing specifications before purchasing to ensure compatibility.

The Vesper Fat Bike hub is compatible with standard 6-bolt disc brake rotors. It does not support Centerlock rotor systems.

It is built for both. The robust construction is specifically engineered to handle the high torque and demanding conditions of technical fat bike terrain, making it a reliable choice for everything from groomed snow trails to rocky, technical climbs.

Yes, this specific model is configured with an XD freehub body, which is compatible with SRAM XD cassettes. Ensure your drivetrain setup matches this standard.