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Details
| Listed in parts books | Not catalogued by year yet |
PISTONS BSA A10 8.25 +010
Piston for the BSA A10 twin, 8.25 compression, +010 oversize for a rebore.
PN · R1220/010
Available in 9 sizes (rebore oversizes):
This is a piston for the BSA A10 twin, listed at an 8.25 compression ratio and a +010 oversize for a rebore. It's a BSA part, not a Triumph one, so if you're working on a Triumph twin this isn't your part.
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Our records on this one are thin — this came in as a single catalog line with no history of appearances across other listings, so we don't have extra detail on wrist pin sizing, ring sets, or which A10 variants it was cataloged against.
Give us a call before you order so we can confirm it matches what your barrels need, especially since it's already been bored to a +010 spec.
$86.95
Pin your bike to check this part fits.
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