Mahle Rings Performance Gas Nitride Steel 4.075 x .043 .157 RW Plain Ring Set

When you're rebuilding the top end of your engine, getting the piston rings seated properly is key to good compression and oil control. These Mahle OE Performance Gas rings are made from steel with a nitride finish, which is a tough surface treatment that helps them wear in well and resist scuffing against the cylinder wall. They're designed for a 4.075 inch bore with a .043 inch top ring groove and a .157 inch ring thickness.

The nitride treatment on these rings helps them hold up to the heat and stress inside the cylinder. This means you get a solid seal for better power and less oil burning. Mahle is a well-known name in engine components, and these rings are a solid option for a performance rebuild where you need reliable parts.