Mahle Rings Perf Gas Nitride Steel 4.125in x .043in .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)

These Mahle OE piston rings are made from nitride steel, a strong material chosen for its durability and resistance to wear, especially in high-performance gas applications. The rings measure 4.125 inches in bore diameter with a 0.043-inch thickness, designed to create a tight seal between the piston and cylinder wall. This specific set comes in a bulk pack of 48, making it a practical choice for engine builders working on multiple engines or performing a large-scale project.

The nitride surface treatment on these rings is a key feature. It hardens the ring surface, which helps it resist scuffing and wear, ensuring a longer service life and consistent performance over time. This treatment also helps the rings seat properly against the cylinder wall, which is crucial for maintaining compression and controlling oil consumption. Because they are designed for gas engines, they are built to handle the combustion pressures and temperatures typical in these applications.

This bulk pack is ideal for professional engine builders or shops that frequently work on performance gas engines. Having 48 rings on hand means you're ready for multiple builds without needing to reorder frequently. While these rings are well-suited for many performance builds, please note they are not CARB approved and cannot be shipped to California.