R75/5 - R90S models to 09/1975

For R75/5, R75/6, R90/6, R90S models to 09/1975 with points ignition, duplex timing chain (3/8X7/32) and small oil seal front, only in conjunction with oil pump rotor inner from 9/1980 No. 114054. Details of sport camshafts will be shown here.