For R75/5, R75/6, R90/6, R90S models to 09/1975 with points ignition, Duplex timing chain (3/8X7/32) and smal oil seal front, only in conjunction with oil pump rotor inner from 09/1980 No. 114054.
Power Kit Extra 1000cc for R80 models after September 1980, now with 4 pc. stainless steel pushrod tubes (no. 112001) !!!
Modern and lighter pistons for R75/5, R75/6 and R75/7 - 1. oversize 82,5 mm