Mahle Rings Performance Gas Nitride Steel 4.445 x .043 .171 RW Plain Ring Set

These Mahle OE piston rings are made from nitrided steel, a material chosen for its ability to stand up to the heat and friction inside an engine. The bore size is 4.445 inches, with a ring thickness of .043 inches and a .171 inch oil ring width. This set is designed for performance gas applications, meaning they're built to handle the demands of engines that are worked harder than stock.

The nitride treatment on these rings is a key feature. It hardens the surface, which helps them resist wear and maintain a good seal against the cylinder wall over time. This is important for keeping compression where it belongs and preventing oil from getting into the combustion chamber. When you're rebuilding an engine, especially one you plan to push a bit, getting the right rings is crucial for long-term reliability and performance.