Piston Ring Set 4.185 Moly 1/16 1/16 3/16

The Piston Ring Set 4.185 Moly 1/16 1/16 3/16 is a premium piston ring kit designed for high-performance engine applications that require precision bore fitment and sustained thermal stability. This kit is particularly beneficial for engine builders and racing enthusiasts who demand tight manufacturing tolerances and advanced material properties.

The set features a 4.185-inch bore diameter and a file-fit design, which necessitates hand-finishing to achieve the exact clearances required for optimal performance. The rings are constructed from ductile iron and coated with plasma moly, providing a low-friction sealing surface that resists scuffing during high-RPM operation. The ring thickness specifications include a 1/16 inch top compression ring, a 1/16 inch second compression ring, and a 3/16 inch oil control ring.

This piston ring set is ideal for competitive motorsports applications, where maintaining proper contact pressure against cylinder walls is crucial. Proper ring gap spacing and bore preparation are essential for achieving optimal sealing and longevity, making this kit a valuable choice for those preparing high-performance engines.