Mahle Rings Perf Gas Nitride Steel 4.165in x .043in .157 RW Bulk Plain Ring Set (48 Qty Bulk Pack)

If you're rebuilding the top end of a performance gas engine, getting the piston ring seal just right is critical for power and longevity. This bulk pack of Mahle OE piston rings is designed for just that purpose, offering a well-built solution for engine builders working on multiple projects or high-volume shops. Each ring measures 4.165 inches in bore diameter with a 0.043-inch thickness, fitting a common performance engine size.

These rings are made from steel and feature a nitride coating, which is a tough surface treatment that helps them resist wear and maintain a good seal against the cylinder wall, even under demanding conditions. The 0.157-inch ring width is standard for many performance applications. This bulk pack contains 48 rings, making it a practical choice for engine builders who need a consistent supply of reliable components for their builds. Mahle is a well-known name in engine parts, and these rings carry that reputation for solid performance.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Ensure you check your specific engine's requirements for ring gap and installation procedures, as proper setup is key to achieving optimal performance and durability from any piston ring set.