Supertech Performance HEVN-1004-0 High-Performance Engine Valve

Supertech Performance brings over 20 years of manufacturing expertise to their engine valve lineup. Developed through intensive testing and close collaboration with professional engine builders, Supertech valves are engineered for high flow, long-term durability, and consistent quality across a wide range of performance applications.

Material Options:

• Stainless Steel (EV8 / 21-4N Alloy): One-piece forged construction for superior strength and reliability. Supertech primarily uses EV8 (21-4N) stainless alloy for both intake and exhaust valves, with additional alloys and heat treatments available for specialized applications.
• Inconel 751 Nickel-Base Alloy: Designed for extreme-heat exhaust applications, including turbocharged and supercharged engines where exhaust temperatures reach critical levels.

Coating Technologies:

• Chrome Coating: A widely used finish in performance valves, providing enhanced surface hardness and heat resistance.
• Black Nitride Treatment: A surface-hardening process that produces a smoother finish than chrome, reducing friction between the valve stem and guide for improved longevity and performance.

Sold individually — one valve per unit. When ordering for an engine that requires multiple valves, order the exact quantity needed (e.g., order 16 for a 16-valve engine).