BSA A7 A10 Gold Star Gearbox Sprocket 21T.

s83) 67-3065. 21T.

Gearbox Sprocket 21 T.
BSA A7 A10
late B31 B32 B33 B34
Gold Star -1965
Chain 110-056-...
Chain 530
5/8" x 3/8"

Made in England

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