Mahle Rings 4.125in Bore .043in 3.00MM Plasma Moly Ductile Std Tension Reduced Rad Moly Ring Set

Mahle is known for making solid engine components, and these piston rings are no exception. If you're rebuilding an engine with a 4.125-inch bore, these rings are designed to help your pistons seal properly against the cylinder walls. Getting that seal right is key for good compression and keeping oil out of the combustion chamber.

These rings feature a plasma moly coating on the top ring, which is a tough material that helps reduce friction and wear. They're made from ductile iron, giving them good strength, and have a reduced tension design. This setup is often used to help improve oil control and reduce blow-by, especially in performance or performance-rebuild applications. The standard tension means they're built for a wide range of applications where a reliable seal is needed.