| Listed in parts books | Not catalogued by year yet |
RING SET BSA A10+.040
Piston ring set for the BSA A10 twin, +.040 oversize for rebored cylinders.
This is a piston ring set for the BSA A10 twin, machined to +.040 oversize for a rebore. It's not a Triumph part, so if you came here through a Triumph search, double check your engine before ordering.
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Ring sets like this get fitted when a cylinder has been bored out past standard to clean up wear or damage, and the +.040 marking tells you exactly which oversize piston it's meant to run with. Our records on this one are thin beyond the basic listing, so if you're not certain your barrels were bored to that exact figure, give us a call before you order.
We don't have additional fitment or spec detail on file for this part beyond what's noted here.
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