PISTONS BSA A10 8.25 +070

This is a piston for the BSA A10, listed here in the +070 oversize with an 8.25 compression figure noted in the catalog entry. It's a BSA part, not a Triumph piston, so if you're working on a Triumph twin this one isn't for your motor. The tag that came through on this listing says Amal, but that's a mix-up on our end - Amal makes carburetors, not pistons. Go by what the description says: this is a BSA A10 piston. We don't have much more detail on file for this one beyond the oversize and compression note. If you're rebuilding an A10 top end and need to confirm bore size or ring fitment against what's actually in your barrels, give us a call before you order.