Manley Performance Race Master Stainless Steel Valves with Chrome Stems and H...

Manley Performance Race Master Stainless Steel Valves High-performance stainless steel valves engineered for racing engines that demand strength, longevity, and superior airflow. Ideal for builders and racers using aggressive fuels, these valves deliver consistent performance under extreme conditions. Durable stainless steel construction — both exhaust (XH-426) and intake (NK-842) valves are made from premium stainless steel for corrosion resistance and long service life. Chrome stems & hard tips — enhanced wear resistance and reduced friction for extended valve train life and reliable valve seating. Swirl polished under-head areas — improves fuel/air mixing and reduces boundary layer separation for better combustion efficiency. Fully machined combustion faces — precise sealing surfaces promote consistent sealing and improved horsepower potential. Multiple shapes available — choose Race Master (straight stem) or Race Flo profiles to match your race engine requirements and port flow characteristics. Recommended for alcohol-fueled engines — especially suited as exhaust valves in alcohol applications, offering dependable performance in high-temperature, corrosive environments. Trust Manley Performance valves to combine race-proven materials and machining for maximum durability, predictable performance, and easier engine tuning. Perfect for championship-level builds and aggressive street/strip applications.