Supertech Performance VWIVN-1004S-10 Black Nitrided Intake Valves +1mm Oversize

The Supertech Performance VWIVN-1004S-10 is a high-performance black nitrided stainless steel intake valve set designed for Audi and Volkswagen 2.0L TSI/TFSI engines (EA113, EA888) and 2.5L engines found in Audi TT-RS and RS3 models. This set includes 10 intake valves featuring a +1mm oversize head diameter for improved airflow and engine performance.

Key Specifications:

• Head Diameter: 34.85mm (+1mm oversize)
• Stem Diameter: 5.98mm
• Valve Length: 101.80mm (4.01 inches)
• Material: Black Nitrided Stainless Steel
• Groove Type: Single Groove

Features and Benefits:

• One-piece forged stainless steel construction manufactured from enhanced EV8 (21-4N) steel for maximum strength and durability
• Black nitride treatment provides superior hardness with a minimum microhardness of 800HV while maintaining excellent ductility
• Smoother surface finish compared to chrome-coated stems, reducing friction between valve stem and guide
• Hardened valve seat surface offers extended durability with lead-free fuels, alcohols, and nitro
• Compatible with all seat materials including nodular iron
• Designed for high-performance racing applications including drag racing, rally, and road racing

Important Installation Note: Must use single groove keepers part number KPR-6S/7 (requires 2 keepers per valve, sold separately).

Supertech Performance valves are engineered to meet the demands of serious motorsports enthusiasts and professional engine builders who require the highest quality valve train components for their performance builds.