Complete your BSA 650 top-end job by installing a new set of JCC pistons. JCC pistons are the best thing (or better?) since original AE / Hepolite pistons. We have found JCC pistons to be more consistent than any original or "NOS" piston.
JCC pistons come complete as shown (sold in sets) with pins, clips and pistons. Compression ratio is 9:1 which is standard for most applications... Fits all BSA A65 unit twins (Lightning, Thunderbolt, Spitfire, Firebird Scrambler, etc) from 1962-1972.
- Made in Taiwan by JCC
- Free shipping in the USA