For the racers out there.
Forged pistons with higher compression domes, These need to be used carefully and all checks with valve clearance / squish and deck height need to be checked carefully. Its a decent quality kit and should give some decent results in power if used with the right cam. works really well with the K head, CR29mm or 31 carbs gives a significant increase in power and torque.
I bring a couple of set in at a time, so may not always have on shelf.
I can build these into your engine, and can quote for your engine spec.