Mahle Rings Performance Steel Napier THM-13 4.135 x .043 .135 RW Plain Ring Set (48 Qty Bulk Pack)

These Mahle OE Performance Steel Piston Rings feature a Napier hook on the second ring, a design choice that helps improve oil control and prevent blow-by, especially in high-performance applications. The rings measure 4.135 inches in bore diameter with a 0.043-inch top ring and a 0.135-inch second ring, suitable for a wide range of engine builds where precise sealing is critical.

Constructed from durable steel, these rings are built to withstand the rigors of demanding engine operation. The Napier hook design on the second ring is a notable feature that aids in scraping oil from the cylinder wall, contributing to better lubrication and reduced friction. This bulk pack contains 48 sets, making it a practical choice for engine builders or shops working on multiple projects.

When rebuilding an engine, ensuring proper ring seal is paramount for performance and longevity. These Mahle rings offer a well-built solution for those seeking reliable components for their build. Please note that these rings are not CARB approved and cannot be shipped to California.