| Also known as | JPO643 |
| Listed in parts books | Not catalogued by year yet |
PISTON SET BSA 650 7.5-1
Piston set for the BSA 650 twin, 7.5-1 compression ratio.
This is a piston set for the BSA 650 twin, listed at a 7.5-1 compression ratio. The part carries the number JRCBSA650/060L in our records, with JPO643 showing up as the same piece under an alternate number.
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Our catalog entry on this one is brief, so we can't speak to bore size, ring specs, or which specific models it was cataloged against beyond what's stated. If you're rebuilding a BSA 650 twin and need to match this to your bore, give us a call and we'll go over what we know before you order.
Worth confirming fitment against your engine's actual bore before committing, since piston sets like this are sized to a specific overbore stage.
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