Mahle Rings Performance Plasma Steel Top Ring 4.200in x 1.0MM .143in RW HVOF Moly Ring Set

This set includes Mahle OE Performance Plasma Steel Top Rings, designed for a 4.200 inch bore. The top rings measure 1.0MM thick with a 0.143 inch radial width, featuring an HVOF Moly coating for improved durability and performance.

These rings are built with plasma-sprayed steel for a strong, well-built component. The HVOF (High Velocity Oxygen Fuel) Moly coating is applied to the ring face, which helps reduce friction and wear against the cylinder wall. This advanced coating is known for its ability to withstand high temperatures and pressures, making it a solid choice for performance applications where engine reliability is key. The 1.0MM top ring thickness is a common specification for many performance builds, offering a good balance of sealing and strength.