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

When you're building an engine that's meant to rev high and often, every ounce of weight savings counts. This kit from Manley Performance includes eight titanium exhaust valves, specifically designed for those demanding high-RPM applications. Titanium is significantly lighter than traditional steel valves, which helps reduce the stress on your valve train, allowing for higher engine speeds and improved overall efficiency. You're getting a set of eight 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.

Manley constructs these valves from a single piece of forged titanium, which is a strong method that ensures grain flow is optimized for durability and minimizes potential weak points. They're then meticulously machined on advanced CNC equipment to hold very precise tolerances, crucial for proper sealing and performance. Manley selects specific titanium alloys that offer a great balance of hardness, ductility, and fatigue strength, even at the high temperatures exhaust valves endure. The 'B' suffix on this part number indicates it uses a Bead Loc keeper groove, and the 'H' means it's made from a higher hardness material. Because these valves don't have a hardened tip, you'll need to use a wear cap like the Manley P/N 42104, 42104TM, or the Manley LocCap System to protect the tip.

Each valve goes through a thorough final inspection to ensure it meets Manley's high standards for quality and reliability. These are built for serious performance, where reducing reciprocating mass is key to achieving higher engine speeds and better responsiveness.