BSA A10 Piston. Pair 1950 - 63.
also
Ariel FH Fieldmaster 1952- Piston
9:1 Compression
Please look at all pictures
including gudgeon Pin, piston rings and circlips
Piston Clearance 0.12mm or 45thou
price per pair
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