Mahle Rings Perf Plasma Steel Top Ring 4.145in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

If you're rebuilding an engine and need top-tier piston rings, this Mahle set is built for performance. These are plasma-coated steel top rings, designed to handle the heat and stress of demanding engine builds. The 1.0mm thickness is a common size for performance applications, and the HVOF moly coating on the second ring helps with break-in and sealing. This bulk pack comes with 48 rings, making it ideal for shops or builders working on multiple engines or larger V-configurations.

Mahle is a well-known name in engine components, and these rings reflect that reputation. The plasma coating on the top ring offers improved wear resistance and better sealing under high cylinder pressures compared to cast iron rings. The second ring features a High-Velocity Oxygen Fuel (HVOF) moly coating, which is a durable and effective surface treatment that aids in reducing friction and promoting proper seating against the cylinder wall. This combination helps ensure efficient combustion and oil control, critical for engine longevity and performance.

When installing these rings, pay close attention to the ring gap specifications for your specific application, as this is crucial for proper engine operation and to prevent damage. Ensure your pistons are clean and free of debris before fitting the rings. This set is designed for engines requiring a 4.145-inch bore size.