Brand New Unused Zenoah 54mm Inner Clutch Case (Fits Zenoah and Chung Yang Engines with 54mm clutches), Set of 4 Zenoah 54mm Clutch Case Mounting Bolts (Secures Clutch Case to Crankcase), Zenoah 54mm Clutch Plate (Holds Clutch Inside Clutch Case), and Zenoah 54mm Clutch Plate Bolt (Secures Clutch Plate to Crankshaft).