Supertech Performance GEVI-3303F High-Performance Exhaust Valve

The Supertech Performance GEVI-3303F is a high-performance exhaust valve engineered for demanding engine applications. Backed by over 20 years of manufacturing expertise, Supertech works closely with professional engine builders to deliver continuous improvements in flow rate, durability, and quality.

Material Options:

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

Protective Coatings:

• Chrome Coating — A widely-used surface treatment in performance valve manufacturing, providing enhanced wear resistance.
• Black Nitride Treatment — A surface-hardening process that creates a smoother finish than chrome, reducing friction between the valve stem and guide for improved longevity and performance.

Sold individually (per valve). Order the exact quantity required for your engine build — for example, if your application calls for 16 valves, order a quantity of 16.