Mahle Rings Perf Plasma Steel Top Ring 3.952in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

This bulk pack gives you 48 Mahle performance plasma steel top rings, each measuring 3.952 inches in bore diameter with a 1.0mm thickness and a 0.143-inch width. These rings feature a plasma-moly coating applied using HVOF (High Velocity Oxygen Fuel) thermal spray technology, which creates a dense, wear-resistant surface. This advanced coating is designed to handle the higher temperatures and pressures found in performance engine builds, helping to ensure a solid seal between the piston and cylinder wall. The steel construction offers good tension and durability for demanding applications.

Mahle is a well-known name in engine components, and these rings are built to their OE standards, meaning they are made to fit right and perform reliably. The plasma-moly face is particularly effective at reducing friction and wear, which can contribute to improved engine longevity and consistent performance over time. The 1.0mm top ring design is common in many performance applications, offering a good balance of sealing and oil control when paired with the correct second ring and oil ring. This bulk pack is ideal for shops or builders who frequently work on performance engines and need a ready supply of high-quality top rings.

When installing these rings, ensure your cylinder bores are properly honed and cleaned to match the ring specifications. Refer to Mahle's installation guidelines for precise details on ring gap and orientation to achieve optimal performance and sealing in your specific engine build. Please note that these rings are not CARB approved and cannot be shipped to California.