Mahle Rings Performance Plasma Steel Top Ring 4.025in x 1.0MM .143in RW HVOF Moly Ring Set

This set includes the top piston rings you need for a 4.025-inch bore engine. These rings are made from plasma-coated steel, a well-built material chosen for its durability in demanding engine conditions. The HVOF moly coating on the ring face helps reduce friction and wear, contributing to a longer lifespan for both the rings and the cylinder walls. This updated design aims for improved performance and sealing within the combustion chamber.

Mahle OE is a well-known name in engine components, and this ring set reflects their commitment to providing reliable parts. The 1.0mm top ring thickness and .143-inch ring groove width are standard dimensions for many performance applications, ensuring a proper fit in the corresponding piston groove. When rebuilding or refreshing an engine, choosing the right piston rings is crucial for proper compression and oil control.