Mahle Rings Performance Napier Steel 2nd Ring 4.065in x 1.0MM .136in RW Plain Ring Set

This set includes Mahle OE Performance Napier Steel 2nd Rings, designed for a 4.065-inch bore. The rings measure 1.0mm thick with a .136-inch groove width and feature a Napier hook design, which helps with oil control and prevents blow-by. These are a plain steel construction, built for reliable performance in your engine.

The Napier hook on the second ring is a notable design feature. It helps the ring seal against the cylinder wall more effectively, especially as it wears. This design contributes to improved compression and better oil management within the cylinder. Mahle OE is a well-known name in engine components, and these rings are made to meet the demands of engine rebuilding and repair.