Mahle Rings 4.2550 Bore Dia 1/16in Edge Width Grey Iron THG Second Ring Plain Ring Set

If you're rebuilding the top end of your engine, getting the right piston rings is crucial for proper sealing and compression. These Mahle OE piston rings are designed to fit a 4.2550 inch bore diameter, with a 1/16 inch edge width for the second ring. They are made from grey iron, a solid material for this application, and feature a plain ring design for the second compression ring, ensuring a good seal against the cylinder wall.

Mahle is a well-known name in engine components, and these rings are built to OE specifications. The grey iron construction offers good wear resistance and thermal conductivity, which are important factors for long-term engine health. Getting the correct ring gap and tension is key during installation to ensure optimal performance and prevent issues like blow-by or oil consumption.