CP Nitrided Back Cut Top Ring - 4.147 bore / 1.2mm

CP Pistons is known for making high-performance engine components, and this nitrided back-cut top ring is a solid option for your engine build. This ring is designed for a 4.147-inch bore and features a 1.2mm thickness, which is a common size for many performance applications. The nitriding process hardens the surface of the ring, making it more durable and resistant to wear, while the back-cut design helps improve sealing under pressure.

When you're rebuilding an engine, especially one where you're looking for improved performance, the details matter. This top ring is a critical piece for sealing the combustion chamber. Its construction and design aim to help your engine run efficiently and reliably. It's a well-built component that fits right into the groove for its intended application.