Mahle Rings Performance Napier Steel 2nd Ring 4.250in x 1.0MM .136in RW Plain Ring Set

This Mahle OE 2nd ring is made from Napier steel, a strong material chosen for its durability and ability to handle the heat and pressure found in performance engines. It's designed for a 4.250-inch bore and features a 1.0mm thickness with a .136-inch wall, ensuring a precise fit within the piston groove.

The Napier design of this second ring helps to scrape oil from the cylinder wall more effectively than a standard ring, which can improve oil control and reduce blow-by. This updated design contributes to better overall engine performance and longevity, especially in applications where the engine is pushed harder. It's a well-built component that aims to keep your engine running smoothly.

Please note that this ring set is not CARB approved and cannot be shipped to California. Always refer to your vehicle's service manual for specific installation procedures and torque specifications.