The Speedmaster PCE306.1049 is a Plasma Moly piston ring set engineered for a 4.165-inch bore diameter with a 1.5mm / 1.5mm / 3mm ring pack configuration. The plasma moly facing provides enhanced wear resistance and improved ring seal, making this set a strong choice for performance and high-output engine builds demanding consistent compression retention.
The Zero Gap design helps eliminate blow-by at the end gaps, supporting maximum cylinder pressure and optimized combustion efficiency. Sold as a complete set, these rings are ideal for engine builders seeking a reliable, performance-grade ring solution for applications matching the 4.165-inch bore specification.