Mahle Rings Performance Steel Napier 2nd Ring 4.285in x .043 .135in RW Plain Ring Set

Mahle is known for making solid OE replacement parts, and these Performance Steel Napier 2nd Ring sets are no different. They are designed to fit specific engine applications, ensuring a proper seal between the piston and cylinder wall. This particular set features a Napier hook design on the second ring, which helps with oil control and prevents blow-by, especially under demanding conditions. The steel construction offers good durability for everyday driving and performance use.

This set includes rings with a 4.285-inch bore size, a 0.043-inch top ring thickness, and a 0.135-inch second ring groove width. The 'RW Plain' designation indicates the specific ring configuration and finish. Proper installation is key to performance, so make sure to follow the manufacturer's guidelines for ring gap and seating.