Building or rebuilding a performance engine? You need rings that can seal power and handle the heat. This Speedmaster piston ring set is designed for a 4.185-inch cylinder bore and is a popular choice for street performance, track, and race applications.
Let's break down the specs: It's a classic 1/16\, 1/16\, 3/16\ ring pack. That means the top and second compression rings are each 1/16\ thick, and the oil ring assembly is 3/16\ thick. The top ring is made from ductile iron with a Plasma-Moly facing - this is a premium material known for excellent wear resistance and sealing, especially in high-horsepower setups.
The second ring is cast iron, and the oil ring is a standard-tension stainless steel design. These are \file-fit\ rings, which is important for performance builds. The ends are left unfinished so you or your machinist can precisely file them to achieve the perfect end-gap for your specific cylinder bore and application. This ensures a tight seal as the engine heats up. It's a track-proven, reliable set from a trusted brand in the performance world.
