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Shop/Category/Parts catalog/PISTON SET A10+.040 JAPAN
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PISTON SET A10+.040 JAPAN

A +.040 oversize piston set for the BSA A10 engine.

PN · JRCBSAA10/040T
Available in 5 sizes (rebore oversizes):

This is a piston set for the BSA A10 engine, machined to +.040 over standard bore. It's not a Triumph part - the A10 is a BSA twin, and this set is built to go back into a bore that's been taken out to that oversize during a rebuild.

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We don't have much more on file for this one beyond the basic listing, so if you're not certain your barrels have already been bored to +.040, measure before you order. Piston sets are matched to a specific bore size and the wrong one won't do you any good.

Give us a call if you want to talk through what oversize you're actually working with before you commit to this set.

$151.49
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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.