Supertech Performance BMIVN-1008 Black Nitrided Intake Valve

The Supertech Performance BMIVN-1008 is a Black Nitrided intake valve engineered for high-performance and racing applications. Built to exacting tolerances, this valve features a 38mm (+1.0mm oversize) head diameter, a 6.98mm stem diameter, and a standard length of 121.40mm. The flat, triple-groove stem design ensures secure and precise retainer fitment.

Supertech's Black Nitride surface treatment is a thermochemical hardening process that improves wear resistance and reduces friction between the valve stem and guide compared to conventional chrome-coated valves. This results in improved longevity and smoother operation under demanding conditions.

Key Features:

• Head Diameter: 38mm (+1.0mm oversize)
• Stem Diameter: 6.98mm
• Length: 121.40mm (standard)
• Material: EV8 (21-4N) stainless steel — one-piece forged construction for superior strength
• Coating: Black Nitride — thermochemical hardening treatment for reduced friction and enhanced durability
• Design: Flat head, triple-groove stem
• Engineered for high-flow performance with improved fatigue resistance

Supertech valves are manufactured using one-piece forging techniques and premium alloys including EV8 (21-4N) stainless steel. This valve is sold individually (per valve) — order the quantity equal to the number of intake valves required for your engine build.