Mahle Rings Performance Plasma Steel Top Ring 4.150in x 1.0MM .143in RW HVOF Moly Ring Set

If you're rebuilding the top end of your engine, getting the piston rings right is crucial for sealing and performance. This set from Mahle OE features plasma-coated steel top rings, designed to handle the heat and pressure inside the combustion chamber. The plasma coating, applied using HVOF (High Velocity Oxygen Fuel) technology, creates a very dense and durable surface that resists wear and helps maintain a tight seal against the cylinder wall.

These rings are specifically made for a 4.150-inch bore and have a 1.0mm thickness with a .143-inch ring groove width. The moly fill in the ring helps with lubrication and reduces friction, which is important for longevity and consistent performance. Mahle OE is a well-known name in engine components, and these rings are a solid option for anyone looking for reliable performance in their engine build.