for /7 till GS/R models from 09/1975
18mm diameter
compare 11111262904
You need 4pc for one engine.
Modern and lighter pistons for R75/5, R75/6 and R75/7 - 3. oversize 83,0 mm
Modern and lighter pistons for R75/5, R75/6 and R75/7 - 1. oversize 82,5 mm
You need 4pc for one engine.
For all R 80 Nikasil cylinders B = 84,77 mm from 1981 on.
For all R80 Nikasil cylinders C = 84,78mm from 1981 on.
3. oversize in 91,5 mm
1. oversize in 90,5 mm