Supertech Performance PEIVN-28603 Black Nitrided Intake Valve 31.3x5.97x103.8mm

The Supertech Performance PEIVN-28603 is a Black Nitrided Stainless Steel Intake Valve engineered for high-performance and motorsport applications. Featuring a head diameter of 31.30mm, a stem diameter of 5.96mm, and an overall length of 103.80mm, this valve is precision-manufactured to exacting tolerances. Supertech combines cutting-edge technology with over 30 years of experience to produce the highest-performance valves and valve train components on the market.

Key Features:

• Material: Made from high-grade EV8 (21-4N) stainless steel with a proprietary black nitride coating for superior strength and reliability
• Black Nitride Coating: Provides a harder surface with increased wear and corrosion resistance, while improving valve motion efficiency by reducing friction and wear — leading to a longer lifespan and potential power gains, especially at higher RPMs
• One-Piece Forged Construction: Manufactured as a single-piece forged valve for maximum strength and long-term reliability
• Triple Groove Stem: Features a triple groove design; use OEM locks
• Dimensions: Head Diameter 31.30mm | Stem Diameter 5.96mm | Overall Length 103.80mm
• Sold Per Valve: This listing is for a single intake valve — order the quantity equal to the number of intake valves required for your engine build

Supertech serves the racing industry with top-quality valve train solutions for nearly every motorsport discipline, including Drag Racing, Rally, Road Racing, and more. The PEIVN-28603 is a direct-fit, standard-size replacement or upgrade valve suitable for high-output, forced induction, and naturally aspirated builds demanding proven performance components.