Mahle Rings Perf Plasma Steel Top Ring 4.135in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

When you're rebuilding the top end of an engine, especially for performance applications or when dealing with worn cylinders, new piston rings are essential. These Mahle Performance Plasma Steel Top Rings are designed to provide a solid seal between the piston and cylinder wall, which is critical for maintaining compression, controlling oil consumption, and ensuring efficient combustion. The 4.135-inch bore size is specific, and the 1.0mm top ring thickness is a common performance dimension that works well with many piston designs.

What sets these rings apart is the plasma-moly coating applied using the HVOF (High Velocity Oxygen Fuel) process. This advanced coating creates an extremely durable and wear-resistant surface on the top ring. It's designed to handle the higher temperatures and pressures found in performance engines, helping to reduce friction and improve longevity. The steel construction also offers good strength and resilience. This bulk pack contains 48 rings, making it suitable for engine builders or shops working on multiple engines or larger projects.

It's important to note that these rings are not CARB approved and cannot be shipped to California. Always ensure you are using the correct ring orientation and gap settings according to your engine's specifications and the piston manufacturer's recommendations during installation.