BSA A, B and M models Gearbox sprocket lockwasher - Tab Washer
Secures the nut that holds the rear drive sprocket on the gearbox shaft.
Suit A50, A65, A10, B31, B33, M20, M21 and other models.

BSA A7 A10 B31 B32 B33 B34 M20 M21 M33 Gearbox Sprocket Lock Washer 24-4263

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