BSA B44 Piston +20. 79.5mm

BOA45. 41-0797+20

+20 = 79.5 mm GPM, cpl.

compr. ratio 9.4:1

Made by GPM

Middle gudgeon pin to lowest point of piston: 29 mm

Middle gudgeon pin to highest point of piston: 41,5 mm

Gudgeon pin diam. 19 mm

can be used f. Norton

Piston Clearance 0.12mm or 45thou

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