Mahle Rings Performance Napier Steel 2nd Ring 4.055in x 1.0MM .136in RW Plain Ring Set

When you're rebuilding the top end of your engine, getting the piston rings seated correctly is crucial for proper compression and oil control. This Mahle OE Performance Napier Steel 2nd Ring is designed to help achieve that seal. It's a plain ring, meaning it doesn't have any special coatings or treatments, making it a straightforward replacement for many applications.

The Napier design of this second ring helps to scrape oil from the cylinder wall as the piston moves down, preventing excess oil from entering the combustion chamber. This specific ring measures 4.055 inches in diameter and has a thickness of 1.0mm, with a groove depth of .136 inches. It's made from steel, which offers good durability for this critical component. This is a well-built part from a reputable brand, intended to restore your engine's performance.