Piston Ring Set 4.155 1.0mm 1.0mm 2.0mm

The Piston Ring Set 4.155 1.0mm 1.0mm 2.0mm by MAHLE PISTONS is a precision engine component designed for builders and mechanics performing high-performance or rebuild work. This ring set is essential for any serious engine modification, restoration, or racing application where OEM specifications demand exact bore diameter and ring thickness tolerances.

This set features a 4.155-inch bore diameter with two compression rings of 1.0mm thickness each and one oil control ring of 2.0mm thickness. The configuration optimizes compression sealing while the oil ring's greater thickness provides superior oil film management and scraping efficiency. MAHLE's manufacturing standards ensure consistent ring gap, proper tension, and coating consistency across the set, critical factors that prevent blow-by, excessive oil consumption, and ring sticking during cold starts and high-load acceleration.

Technicians and engine builders working with 4.155-inch bore blocks—common in small-block Chevrolet, Ford, and Mopar stroker builds—will find this ring set compatible with corresponding forged or hypereutectic piston assemblies. Proper ring installation requires careful attention to ring gap measurement and piston groove cleaning to ensure optimal performance.