BSA Engine Sprocket/Chain Sprocket B31,B32,B33,B34,Gold Star.M20.M21.M33/ 18T. 4-Lobe

s49) 15-1566.18T

4 Lobe BSA B31,B32,B33,B34,
Gold Star.
18T.
M20.M21.M33
110-046
428 chain
1/2x5/16"
New
Made in England

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