| Also known as | 18-89228 |
| Listed in parts books | Not catalogued by year yet |
PISTONS 500 58-66 +080JCC
An oversize (+080) piston for a 500cc twin, cataloged for engines built in the late 1950s through mid 1960s.
This is a piston for the 500 twin, listed in our records under JRC 500/080T with the alternate number 18-89228 also on file for the same part. The catalog notes it as an oversize piston, marked +080, meaning it's ground to a bigger diameter for a rebore rather than a standard-size replacement.
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Our information on this one is limited to what's in the parts listing itself. The description ties it to 500cc engines from the late 1950s into the mid 1960s, but we don't have the full breakdown of ring packages, pin sizing, or which specific model years it was cataloged against.
If you're rebuilding a bottom end and need to match bore size, give us a call before ordering so we can confirm this is the right oversize for your cylinder work.
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