Supertech Performance HEVN-1021F Engine Valve High-Performance Replacement

Supertech Performance brings over 20 years of manufacturing expertise to their engine valve lineup. Developed through rigorous testing and close collaboration with professional engine builders, Supertech valves are engineered for high flow rates, exceptional durability, and precise quality—meeting the demands of both street and competition applications.

Supertech recognizes that every engine has unique requirements, which is why their valves are available in a range of premium materials to suit any build. Each valve is sold individually (Per Valve)—order the exact quantity your engine requires.

Available Materials:

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

Coating Options:

• Chrome Coating: A proven, widely used surface treatment for performance valves, offering excellent wear resistance.
• Black Nitride Coating: A hardening treatment that delivers a smoother surface finish than chrome, reducing friction between the valve stem and guide for improved longevity and performance.

Supertech Performance valves are a trusted choice among engine builders seeking OEM-quality fitment with race-proven materials and construction.