RING SET BSA A10+.030

This is a piston ring set for the BSA A10 twin, ground to +.030 over standard bore. If your cylinders have been rebored to that oversize, this is the ring set that matches. We don't have much more detail on file for this one beyond the size and the model it's built for, so if you're not sure whether +.030 is the right size for your rebuild, have your bore measurement handy when you call.