Mahle Rings Gas Nitride Steel Performance Top Compression Ring 4.600 x .043 .170 RW Plain Ring Set

This is a set of Mahle OE performance top compression rings. They are made from steel and feature a gas nitride finish, which helps them stand up to wear and tear. The rings measure 4.600 inches in bore size, with a ring thickness of .043 inches and a back clearance of .170 inches. This set is designed for performance applications where durability and a solid seal are important.

The gas nitride treatment on these rings is a notable feature. It hardens the surface, making the rings more resistant to friction and heat. This can lead to a more consistent seal between the piston and cylinder wall, which is crucial for engine performance and longevity, especially in engines that see harder use. They are a plain ring design, meaning they don't have any special features like a Napier hook on the second ring, focusing instead on a robust top ring seal.