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Shop/Category/Parts catalog/PISTON SET,A10+.080 8:1
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Also known asGAN 04A, GAN-04A
Listed in parts booksNot catalogued by year yet

PISTON SET,A10+.080 8:1

Piston set for the BSA A10 engine, .080 over standard bore, 8:1 compression ratio.

PN · JRCBSAA10/080
Available in 5 sizes (rebore oversizes):

This is a piston set for the BSA A10, sized at plus .080 over standard bore, in the 8:1 compression ratio. The A10 is a BSA twin, not a Triumph, and this set is built to that engine's specifications.

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A piston set like this is meant for a rebore job where the cylinder has already been taken out to the .080 oversize to clean up wear or damage. The 8:1 compression ratio noted here matters for matching against the cylinder head and combustion chamber shape you're running, so check what your engine was set up for before ordering.

Our records on this one are thin beyond what's on the box, so if you have questions about pin sizing, ring pack, or anything else not stated here, give the shop a call before you buy so we can confirm what you're getting matches your rebuild.

$398.49
Pin your bike to check this part fits.

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Any questions about this part?

Ed is at the counter. Tell him what you're working on or what doesn't fit, and he'll take it from there with this part already on the bench.