930 Lightweight Clutch Adapter KitClutch Adapter Kit This adapter set enables the use of a lightweight, "low profile" aluminum clutch pressure plates to be used on the 1978 88 Porsche 930 911 Turbo cars originally equipped with the 930 4 speed transaxle. These pressure plates offer reduced rotating mass for faster engine acceleration and better shifting, as well as increased clamp strength to safely hold more torque. The Porsche 930, 4 Speed Transaxle Clutch System Model Years: 1978