| Also known as | 18-89354 |
| Listed in parts books | Not catalogued by year yet |
PISTON,BSA 250+.060
Rebore piston for a BSA 250, +.060 over standard size.
This is a piston for a BSA 250, listed at the +.060 oversize. It's a rebore piston, meaning it's meant to go in a cylinder that's already been bored out .060 over standard to clean up wear or damage, not a stock-size replacement.
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Our records on this one are thin — it shows up under the JRC 250/060T number with an alternate catalog number of 18-89354, but we don't have the figure or model breakdown to tell you more about bore diameter or compression. If you're rebuilding a 250 BSA and know your cylinder has already been taken out to +.060, this is the size to be asking about.
Give us a call before you order so we can confirm this is the right piston for your particular 250 and that the bore has actually been machined to this oversize — pistons are one part where getting the size wrong means it doesn't go in.
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