Mahle Rings Perf Steel Napier THM-13 4.175in x .1.5MM .150RW Bulk Plain Ring Set (48 Qty Bulk Pack)

These Mahle steel Napier piston rings feature a 4.175-inch bore size and a 1.5mm top ring thickness, designed for performance applications. The Napier hook on the second ring helps to scrape oil from the cylinder wall, which can improve oil control and reduce blow-by. This bulk pack contains 48 rings, making it a solid option for engine builders working on multiple engines or larger projects.

Mahle is a well-known name in engine components, and these rings are built to meet demanding performance standards. The steel construction offers good durability, and the specific Napier design on the second ring is a notable feature for improved oil management. This set is intended for engine rebuilds where precise ring sealing and oil control are critical for optimal performance and longevity.