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

Manley Performance Race Master Stainless Steel Valves with Chrome Stems High-performance stainless steel valves engineered for racing engines that demand durability, consistency and maximum flow. Ideal for engines running alcohol fuels and other high-stress racing applications. Premium stainless steel construction — both intake (NK-842) and exhaust (XH-426) valves are made from high-grade stainless steel for superior corrosion resistance and long service life. Chrome stems & hardened tips — chrome-plated stems reduce wear and scuffing while hard tips extend life in high-heat, high-load conditions. Swirl-polished under-head areas — improved flow characteristics and smoother airflow transition for better combustion efficiency. Fully machined combustion faces — precision machining ensures consistent sealing, optimal seat contact and reliable performance lap after lap. Multiple shapes available — choose Race Master (straight stem) or Race Flo profiles to match your cylinder head and valve train geometry. Recommended for alcohol engines — exhaust valves specified for alcohol applications to withstand aggressive conditions and maintain durability. Whether building a dedicated race motor or upgrading a high-performance street/strip engine, Manley Race Master valves deliver the strength, finish and flow characteristics needed for competitive power and longevity.