R75/6 - R 100 from 09.1975

For R75/6 - R 100 Models from 09.1975 to 1980 with points ignition, Duplex timing chain (3/8X7/32) and large oil seal front, only in conjunction with Oil pump rotor inner from 9/1980 No. 114054. Details of sport camshafts will be shown here.