Mahle Rings Performance Plasma Steel Top Ring 3.644in x 1.0MM .143in RW HVOF Moly Ring Set

The top ring on these Mahle piston rings features a plasma-sprayed steel construction, a tough material that holds up well against wear. This ring set is designed for a 3.644-inch bore, with a 1.0mm top ring width and a 0.143-inch ring groove width, ensuring a precise fit in the piston groove. The HVOF Moly coating on the ring face helps reduce friction and improve oil control, which is crucial for engine performance and longevity.

Mahle has applied a High Velocity Oxygen Fuel (HVOF) Moly coating to the face of these rings. This advanced coating is known for its ability to create a durable, low-friction surface that works effectively with cylinder walls. This helps to reduce wear on both the rings and the cylinder bore, contributing to a longer engine life and more consistent compression over time. This set is a solid option for engine rebuilds where reliable sealing and durability are key.