Mahle Rings Performance Steel Napier 2nd Ring 3.3858in x 1.2MM .135in RW Plain Ring Set

This set includes the steel Napier 2nd ring, measuring 3.3858 inches in diameter with a 1.2mm thickness and a 0.135-inch groove width. These rings are designed for performance applications, featuring a Napier hook design on the second ring which helps with oil control and blow-by reduction.

The Napier hook design on the second ring is a notable feature for performance engines. It creates a scraping action that helps to keep oil in the crankcase and prevents excessive combustion gasses from entering the crankcase. This contributes to a more efficient burn and can help maintain engine health under demanding conditions. The steel construction offers good durability for these critical engine components.