Clutch Cylinder Rebuild Kits. These kits are assembled with high-quality components all designed and manufactured to meet or exceed O.E.M. parts. Each kit contains all the necessary components to rebuild your clutch cylinder. ProX Clutch Cylinder Slave Rebuild Kits feature: Wide range of applications. Kit contains all necessary components to rebuild your clutch cylinder. Designed and manufactured to meet or exceed O.E.M. parts.