Mahle Rings Performance 4.165in x 1.5MM .151 RW Plasma-Moly Steel Top Ring Moly Ring Set

These Mahle OE Performance piston rings feature a 1.5mm top ring thickness and a plasma-moly steel construction for the top ring, which is a strong choice for engines that see a lot of use. The overall ring set is designed to seal combustion gases effectively, helping your engine run efficiently. They are built to fit a 4.165-inch bore size, making them a solid option for many performance engine builds.

The plasma-moly coating on the top ring is known for its wear resistance, which is important for maintaining a good seal over time, especially in engines that are pushed a bit harder. This set includes moly rings, which are a popular choice for their ability to handle heat and provide good lubrication. Mahle has been a well-known name in engine components for a long time, and these rings are made with that experience in mind.