Supertech Performance VWIVN-1007-6 Black Nitrided Intake Valve Set for VW VR6 2.8L

The Supertech Performance VWIVN-1007-6 is a high-quality intake valve set designed specifically for Volkswagen 12V VR6 2.8L cylinder head builds. This set includes 6 forged stainless steel intake valves featuring a black nitride coating for superior performance and durability.

Key Specifications:

• Head diameter: 39.00mm (standard size)
• Stem diameter: 6.97mm
• Overall length: 105.95mm
• Material: Forged stainless steel 21-4N
• Coating: Black nitrided finish
• Groove type: Triple groove
• Features back cut design for improved airflow

Performance Features:

• Black nitride coating provides maximum hardness and reduced friction between stem and guide
• Microhardness rating of 800HV minimum for enhanced wear resistance
• Smoother surface finish than chrome-coated valves
• One-piece forged construction for ultimate strength and durability
• Special heat treatment process optimized for high-performance applications

These valves are an excellent upgrade or replacement for stock VR6 intake valves, offering improved flow characteristics and durability at a competitive price point. The black nitrided finish is particularly popular for European performance engines, providing superior hardness while maintaining good ductility beneath the hardened layer.