Supertech Performance HEVN-100F Engine Valve Stainless / Inconel Performance Replacement

Supertech Performance brings over 20 years of manufacturing expertise to their line of precision-engineered engine valves. Developed through intensive testing and close collaboration with professional engine builders, Supertech valves deliver exceptional flow rates, long-term durability, and consistent quality across a wide range of performance applications.

Supertech recognizes that every engine has unique requirements, which is why their valves are offered in multiple materials and configurations to suit everything from naturally aspirated street builds to high-boost forced induction race motors.

Available Materials:

• Stainless Steel (EV8 / 21-4N Alloy): One-piece forged construction for maximum strength and reliability. EV8 (21-4N) alloy is the primary material used for both intake and exhaust valves, with additional alloys and heat treatments available for specialized applications.
• Inconel 751 Nickel-Base Alloy: Designed specifically for exhaust valves subjected to extreme heat, making it the ideal choice for turbocharged or supercharged engines where exhaust temperatures are significantly elevated.

Protective Coatings:

• Chrome Coating: A widely used finish in performance valves that provides excellent 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.

Important: Supertech valves are sold individually (per valve). Please order the exact quantity required for your application — for example, a 16-valve engine requires a quantity of 16.