Mahle Rings Performance Plasma Steel Top Ring 4.060in x 1.0MM .143in RW HVOF Moly Ring Set

Mahle is known for making reliable OE replacement parts, and these performance plasma steel top rings are a solid choice when you're rebuilding an engine. They're designed for a 4.060-inch bore and feature a 1.0mm top ring width, which is a common size for many performance applications. The plasma spray coating on these top rings helps them stand up to more heat and wear than standard cast iron rings.

These rings use a plasma-sprayed steel construction for the top ring, which is a step up in durability for engines that see harder use. The HVOF (High-Velocity Oxygen Fuel) process used for the molybdenum coating creates a dense, well-bonded layer that resists scuffing and provides good sealing. This set is intended for performance builds where you need rings that can handle the extra stress.