7CA Slipper pistons, various sizes c/w rings and choice of floating or clamped 1/2” gudgeon pin. (Bore to match size in mm of pistons supplied)

56mm equivalent to standard 2.2
56.25mm equivalent to plus .10

56.50mm equivalent to plus .20

56.75mm equivalent to plus .30

57mm equivalent to plus .40

57.25mm equivalent to plus .50

57.50mm equivalent to plus .60

57.75mm equivalent to plus .70

58mm equivalent to plus .80