| Also known as | 23147 |
| Listed in parts books | Not catalogued by year yet |
RING SET,650+.080 JAPAN
A .080-over piston ring set for the 650 twin, made in Japan, for use after a rebore to that oversize.
This is a piston ring set listed for the 650 twin, sized at plus .080 over standard bore. The .080 designation means it's meant for a cylinder that's been bored out that extra amount, typically after a rebore to true up worn or damaged bores. The catalog notes this set as a Japan-made ring set, and it carries the older reference number 23147 alongside the current JRC part number.
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Ring sets like this go in during a top-end rebuild, matched to whatever your bore actually measures after machining. Because it's an oversize set rather than standard, it only works if your cylinder has actually been bored to that dimension - don't drop this in on a standard-bore barrel expecting it to seal up right.
We don't have more detail on this one beyond what's in the description, so if you're not sure whether .080 over matches your bore spec, give us a call and we'll sort it out before you order.
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