| Listed in parts books | Not catalogued by year yet |
PISTON BSA CLUBMAN12 +020
A +020 oversize piston listed for the BSA Clubman 12, not a Triumph part.
This is a piston listed for the BSA Clubman 12 in the +020 oversize. That's an over-bore piston, meant for a cylinder that's already been rebored 0.020 inches over standard, not a stock-size part. Our records on this one are thin - the catalog line is short and doesn't give us bore diameter, ring count, or material spec to pass along.
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Given the description names a BSA model rather than a Triumph, this is not a Triumph part despite whatever else is filed near it in our system. If you're sourcing this for a Clubman 12 rebuild, give us a call and we'll confirm what we actually have in stock matches your bore spec before you commit to it.
Sorry if we got something wrong here. If you think this information isn't correct, .