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BSA Piston M20 +40. 83.0mm
BSA Piston M20 +40. 83.0mm
BSA Piston M20 +40. 83.0mm
BSA Piston M20 +40. 83.0mm

BSA Piston M20 +40. 83.0mm

BOA12D/+040.66-1190/+040.8216

BSA Piston M20 +040. 83.0mm

Replica

complete

82mm +040 (=83mm)

Piston Clearance 0.12mm or 45thou

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