TBparts +0.5mm oversized piston and gasket kit. This kit is for the K0 or 1968 -1981 Z50. OEM Quality & Complete. This kit comes with a 0.5mm oversized piston, wrist pin, rings, circlips, all necessary top end gaskets, and the bottom end clutch and center case gaskets. This kit provides a huge savings over the OEM parts.