Brand new high quality piston to fit all 31A, 32A, 33A, 34A, 36A, 37A motors, ideal for road, trials and scrambles applications. We have improved on the original villiers piston by fitting thin, modern style piston rings and the aluminium used is far stronger than original pistons. Comes complete with rings, pin and cir clips. Standard size is 66mm maximum oversize is 68mm (+80)
If you cannot see one on the site in the size you require, please email us and i'll have a look in our "old stock".