Manley 12630-1 Race Master Performance Engine Valve

The Manley 12630-1 Race Master valve delivers professional-grade performance for high-performance and racing engine builds. Engineered with Manley's proven Race Master technology, this valve is designed for bracket racing, drag racing, and oval track applications operating below 8,000 rpm.

Premium Construction Features:

• Chrome-hardened valve stem with .0002" thick chrome coating for superior wear resistance
• Fully hardened valve tip engineered to resist cracking and erosion
• Swirl-polished under head area for optimized airflow
• Fully machined combustion face for precise valve-to-seat contact
• Controlled margin heights and exact stem-to-seat concentricity

Race-Proven Materials:

• Intake valves manufactured from NK-842 stainless steel alloy
• Exhaust valves crafted from XH-426 stainless steel for extreme durability
• Premium materials offer superior tensile strength compared to standard EV-8 alloy (21-4N) valves

Manley Race Master valves feature advanced head and under-head profiles refined since the late 1960s to maximize flow and performance. These valves provide exceptional value for engine builders seeking professional-quality components at competitive prices, suitable for street performance builds up to serious racing applications.