Supertech Performance HIVN-1006F-8 Black Nitrided Intake Valve Set - Honda H22A1/H22A4

These high-performance valves are designed to increase airflow and engine performance during cylinder head rebuilds or performance upgrades.

Construction and Materials:

• One-piece forged stainless steel construction for maximum strength and reliability
• Black nitride hardening treatment applied to the entire valve
• EV8 (21-4N) stainless steel alloy with specialized heat treatment
• Microhardness rating of 800HV minimum for enhanced durability
• Smoother surface finish than chrome-coated valves for reduced friction

Specifications:

• Head Diameter: 35.00mm (standard size, flat face)
• Stem Diameter: 5.48mm
• Overall Length: 106.85mm
• Valve Type: Intake
• Groove Type: Single groove

Key Features and Benefits:

• Black nitride coating provides superior wear resistance and reduced friction between stem and valve guide
• Higher microhardness than base stainless steel while maintaining good ductility
• Designed for racing and high-performance applications including drag racing, road racing, and rally
• Flat face design optimizes combustion chamber efficiency
• Manufactured using over 20 years of valve engineering experience

For optimal performance and longevity, it is recommended to install these intake valves with new valve springs and valve stem seals. Supertech Performance valves are trusted by engine builders and racers worldwide for their exceptional quality, durability, and flow characteristics.