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Details
| Also known as | GAN53 |
| Listed in parts books | Not catalogued by year yet |
PISTON,BSA B50 +.040
BSA B50 piston at +.040 oversize, part number BSAB50/040 (alt. GAN53).
PN · JRC BSAB50/040
Available in 3 sizes (rebore oversizes):
This is a piston for the BSA B50, machined to the +.040 oversize. It's listed under the JRC part number BSAB50/040, with GAN53 showing up as an alternate number for the same piece in other records.
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Going +.040 over is a rebore size, so this piston is meant for a cylinder that's already been bored out that far to clean up wear or damage. It's not a stock-bore piston, so check what your cylinder has actually been bored to before ordering.
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