Mahle Rings Perf Napier Steel 2nd Ring 4.030in x 1.0MM .136in RW Plain Ring Set (48 Qty Bulk Pack)

If you're rebuilding an engine for improved performance, getting the right piston rings is crucial for sealing and compression. This set from Mahle OE features steel Napier 2nd rings, designed to handle the demands of a performance build. The Napier design helps prevent oil from getting past the second ring, which is important for maintaining good compression and preventing blow-by, especially under higher cylinder pressures.

These rings are made from steel and measure 4.030 inches in bore diameter, with a 1.0mm thickness for the second ring and a .136 inch back clearance. The plain finish means they are ready to install without special coatings, and the bulk pack of 48 rings is ideal for shops or builders working on multiple engines or larger projects. Mahle OE is a well-known name in engine components, and these rings are a solid option for those looking for reliable performance parts.