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| Listed in parts books | Not catalogued by year yet |
PISTONS BSA A10 8.25 +020
A .020-over piston for the BSA A10 twin, 8.25 compression ratio.
PN · R1220/020
Available in 9 sizes (rebore oversizes):
This is a piston listed for the BSA A10 twin, sized at .020 over standard with an 8.25 compression ratio. It's a bore-oversize part, meant for a cylinder that's already been machined out to take the next step up from stock.
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We don't have much more on file for this one beyond what's in the catalog line itself. If you're rebuilding an A10 top end and need to confirm ring specs, gudgeon pin fit, or exact bore dimensions, give us a call before you order so we can make sure this matches what your barrels have been bored to.
$86.95
Pin your bike to check this part fits.
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