Mahle Rings Performance Gas Nitride Steel 4.125 x .043 .157 RW Plain Ring Set

Mahle is well-known for making solid OE replacement parts, and these performance gas piston rings are no exception. If you're rebuilding an engine, especially one that's going to see some spirited driving, a good set of rings is critical for sealing the combustion chamber and managing oil. These rings are made from steel and feature a nitride treatment, which is a surface hardening process that helps them stand up to heat and wear. The dimensions are 4.125 inches bore by .043 inch top ring thickness, .043 inch second ring thickness, and .157 inch oil ring width, making them a direct fit for many common performance applications. Proper ring seal is key to getting the most out of your engine's performance and ensuring it runs smoothly.

The nitride surface treatment on these rings helps them resist scuffing and wear, which is important for maintaining a good seal over time, especially in engines that run hotter or are subjected to higher cylinder pressures. They are designed for gas engines and are a plain ring set, meaning they don't have special coatings beyond the nitride treatment. When installing, make sure to follow the manufacturer's recommended gap settings for your specific application to ensure optimal performance and longevity.