BSA Piston +040 Pair. 1950-59.
also
Ariel 1952-
8:1 Compression
including gudgeon Pin, piston rings and circlips
Piston Clearance 0.12mm or 45thou
Price per pair
BSA A75. Triumph T150 Piston +060 Set Cast AlloyCompression ratio 9:1including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouset of 3Please look at ALL pictures