40 SERIES 5/8" Driven Clutch Go Kart Parts This driven clutch is designed for use with 40 series roller chains and features a 5/8 inch bore size.It is compatible with standard go kart drivetrain configurations that utilize a 5/8 inch input shaft.The unit is built to transfer power from the engine to the drive system via a roller chain, supporting in recreational and competitive karting applications.Constructed for under typical operating conditions, it serves as a replacement component for existing clutch assemblies.