Cart 0
BSA Piston M20 Std.
BSA Piston M20 Std.
BSA Piston M20 Std.

BSA Piston M20 Std.

BOA12b/Std. 66-1190/Std. 8216

BSA Piston M20 Std.

Replica

complete

82mm

Piston Clearance 0.12mm or 45thou

These pistons now come with 4 piston rings.

You can also use them only with 3 piston rings.

We Also Recommend

BSA Transfer for Tank/Headstock/Toolbox to 1953

BSA Transfer for Tank/Headstock/Toolbox to 1953
BSA Gearchange Rubber for A,B,C,M Models

BSA Gearchange Rubber for A,B,C,M Models
BSA Piston 250cc C10/C11/C11G/C12 +040 = 64 mm

BSA Piston 250cc C10/C11/C11G/C12 +040 = 64 mm
BSA Transfer Tank 1933/39

BSA Transfer Tank 1933/39
BSA Tank Transfer 1937/38

BSA Tank Transfer 1937/38