20mm bore 3/16 inch key way centrifugal clutch belt drive with pulley and ABS belt for go kart parts, primarily used on bikes.Designed for belt-driven systems, this clutch assembly includes a pulley and is compatible with engines requiring a 20mm shaft diameter and 3/16 inch keyway.The unit features an automatic engagement mechanism that operates based on engine RPM, allowing power transmission to the drivetrain when needed.Constructed for use in small vehicle applications, it supports in go karts and similar machinery.Includes necessary components for installation as part of a belt drive setup.