Barrel and piston set 77mm, ø top 90mm, ø bottom 87mm 1200cc 34hp, 8/1959-7/1965

Description

Only for crankcases with 87mm hole, will not fit 90mm crankcase. Always check you crankcase before ordering.
The kit fits 1200cc engines up to 7/1969 with a single oil relief piston up to engine number D0525049.
Will also fit 1200cc engines from 8/1977 from engine number D1430281.
Engines with numbers in between the ones quoted above will have 90mm cylinder holes.