Supertech Performance VWIVN-1004S-8 Black Nitrided Intake Valve Set +1mm Oversize 2.0T FSI 16V

The Supertech Performance VWIVN-1004S-8 is a high-performance black nitrided intake valve set designed for Audi and Volkswagen 2.0T FSI 16V engines. This set includes 8 valves featuring a +1mm oversize design for improved airflow and performance in high-performance engine builds.

Key Specifications:

• Head Diameter: 34.85mm (+1mm oversize)
• Stem Diameter: 5.98mm
• Valve Length: 103.90mm
• Material: Enhanced EV8 (21-4N) stainless steel with black nitride coating
• Groove Type: Single groove
• Includes valve keepers (locks): KPR-6S/7

Advanced Black Nitride Coating:

• Superior surface hardening treatment with minimum 800HV microhardness
• Smoother surface finish than chrome for reduced friction between stem and guide
• Harder valve seat surface for extended durability with lead-free fuels, alcohol, and nitro
• Maintains excellent ductility beneath the hardened nitrided layer

Manufactured from the highest grade stainless steel available, these one-piece forged valves feature hardened tips and seats for maximum strength and reliability. The black nitride treatment provides superior wear resistance and is compatible with all valve seat materials, making these valves ideal for drag racing, rally, road racing, and other demanding motorsport applications.

Note: Must be used with single groove keepers part number KPR-6S/7 (two per valve, included in set).