Mahle Rings Perf Plasma Steel Top Ring 4.320in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

Mahle OE performance plasma steel top piston rings are built for demanding engine builds. These rings are designed for a 4.320-inch bore and feature a 1.0mm top ring thickness with a 0.143-inch oil ring width. The plasma-deposited steel construction offers improved durability and wear resistance compared to cast iron, making them a solid choice for high-performance applications where engine longevity is critical.

The top ring utilizes a High Velocity Oxygen Fuel (HVOF) Moly coating. This advanced coating process creates a dense, well-bonded layer of molybdenum that helps reduce friction and wear between the piston ring and cylinder wall. This improved surface contact minimizes heat buildup and extends the life of both the rings and the cylinder bores, which is crucial for engines that see frequent high-RPM operation or heavy loads. This bulk pack contains 48 sets of rings, ideal for engine builders or shops working on multiple performance engines.

It's important to note that these rings are not CARB approved and cannot be shipped to California. Always refer to your specific engine build's requirements and manufacturer's installation guidelines to ensure proper fitment and performance.