Mahle Rings Plasma Moly Steel Top Compression Ring 4.135in x .0625in .190in RW Bulk Moly Ring Set

The plasma moly steel construction of these top compression rings means they're built to handle the heat and pressure inside your engine. With a specific measurement of 4.135 inches bore size and a .0625 inch ring thickness, these rings are designed for a precise fit in many engine builds.

Mahle OE uses plasma moly steel for its durability and ability to create a strong seal against the cylinder wall. This material choice helps reduce friction and wear, contributing to better engine performance and longevity. The .190 inch radial thickness is a common spec that ensures compatibility with many piston designs, making them a solid option for engine rebuilds where reliable sealing is critical.