Ferrea Chevrolet LS4 1.6in 4.915in 24 Deg Tulip S-Flo Rad Grv 6000 Series Exhaust Valve - Set of 8

These are Ferrea 6000 Series exhaust valves, specifically made for Chevrolet LS4 engines. You get a set of eight, which is what you'll need for a complete engine rebuild or upgrade on that LS4. They feature a 1.6-inch head diameter and a 4.915-inch overall length, designed with a 24-degree tulip angle for good sealing in the combustion chamber.

Ferrea is known for making well-built valvetrain components, and these valves are no exception. They use their 6000 Series material, which is a strong alloy chosen for its durability under high temperatures and stress. The S-Flo design and radial groove (Rad Grv) are intended to help improve airflow into the cylinder, which can contribute to better engine performance. This is a solid option if you're working on an LS4 and need reliable, high-performance exhaust valves.