Mahle Rings Perf Plasma Steel Top Ring 4.150in x 1.0MM .143in RW HVOF Moly Ring Set (48 Qty Bulk Pk)

This is a bulk pack of 48 sets of Mahle OE Plasma Steel Top Piston Rings, designed for a 4.150-inch bore. These rings feature a 1.0mm thickness and a unique RW HVOF Moly coating, which is a thermal spray process that applies a dense, wear-resistant layer of molybdenum. This advanced coating helps reduce friction and improve durability, making them a solid choice for performance engine builds where reliability and longevity are key.

The plasma-sprayed molybdenum coating is applied using a High-Velocity Oxygen Fuel (HVOF) process. This method creates a very hard and uniformly dense layer that bonds exceptionally well to the steel ring. This results in improved sealing against the cylinder wall and better resistance to wear, even under demanding operating conditions. The 1.0mm top ring design is common in many performance applications, offering a good balance of sealing and reduced drag.

This is a bulk package containing 48 individual ring sets, making it ideal for engine builders or shops working on multiple engines. Each set is crafted to Mahle's OE standards, ensuring consistent performance and fit. Please note that these rings are not CARB approved and cannot be shipped to California.