Manley Titanium Exhaust Valve Kit - Noonan Race Engineering - NRE - X1/Super 6

If you're building an engine for serious high-RPM use, Manley Performance's Titanium Exhaust Valve Kit is a smart choice. These valves are specifically made to handle the demands of extended high-rpm operation, helping your engine rev higher and more freely. By using titanium, Manley significantly cuts down on valve train weight, which not only improves overall engine efficiency but also allows for quicker response when you're pushing the engine hard.

What sets these valves apart is their one-piece forged construction. This method ensures a solid, durable part with consistent grain flow, avoiding the potential weak spots found in head-welded valves. They're then precisely machined in advanced CNC centers to exacting tolerances, ensuring they perform exactly as they should. Manley uses premium titanium alloys chosen for their balance of strength, hardness, and ductility at high temperatures, making them well-suited for demanding conditions. Each valve goes through a strict final inspection to guarantee reliability and performance.

This kit includes 8 exhaust valves, each featuring a 1.950-inch head diameter and a 0.3415-inch stem diameter, with an overall length of 6.200 inches. They come with a Bead Loc groove for secure keeper engagement. It's important to note that these valves do not have a hardened tip, so you'll need to use a Manley wear cap, like part numbers 42104, 42104TM, or the Manley LocCap System, for tip protection. The 'C' in the part number indicates a premium CrN seat coating for added durability.