This EBC Clutch Component is designed to fit model years Yamaha YZ 400 D 1977 1978 1979. Title: EBC Motorcycle Clutch ComponentYamaha YZ 400 D/E/F 1977-1979. Model: YZ 400. Model: YZ 400 D. EBC produce a clutch tool for almost every clutch plate design known and all are listed in the main EBC application catalogue.