American Suspension Race series fork legs use the proprietary MOS2X coating. MOS2X eliminates sticking and creates the slipperiest surface imaginable for the fork bushing to ride on. This space-age coating makes small bumps in the road seem to disappear. MOS2X is a surface engineering tribological coating used on Aircraft aluminum in specialized racing vehicles to reduce friction and ensure long life. Also includes fender and brake mounts. *Street or track, nothing beats MOS2X.