Mahle Rings Perf Napier Steel 2nd Ring 4.070in x 1.0MM .136in RW Plain Ring Set (48 Qty Bulk Pack)

This bulk pack includes 48 Mahle OE steel second compression rings, each measuring 4.070 inches in bore diameter with a 1.0mm thickness and a 0.136-inch ring groove depth. These rings are designed for performance applications, featuring a Napier style second ring which helps improve oil control and prevent blow-by. The plain steel construction offers solid durability for demanding engine builds.

The Napier hook on the second ring is a notable design feature. It helps to scrape oil from the cylinder wall on the downstroke and also provides a better seal against the cylinder wall during the compression stroke, especially as the piston skirt moves outward. This design contributes to improved engine performance and reduced oil consumption. This set is intended for engine builders working on multiple projects or those who need a substantial quantity of high-performance rings.

Please note that this product is not CARB approved and cannot be shipped to California. Always refer to your engine build specifications and manufacturer instructions for proper installation and application.