Supertech Performance NIVN-1030-12 Black Nitrided Intake Valve Set for Nissan RB26DETT

These Extreme Flow Performance Valves are designed for high RPM and high horsepower applications in pro street and racing environments, featuring a black nitride coating that excels in high temperatures, runs cooler to improve valve life, and is ideal for use with nitrous, turbos, and superchargers.

Technical Specifications:

• Head Diameter: 34.65mm (standard size)
• Stem Diameter: 5.97mm
• Length: 102.3mm
• Material: EV8 (21-4N) stainless steel alloy
• Finish: Black nitrided stainless steel
• Groove Type: Single groove

Key Features:

• One-piece forged valve construction for maximum strength and reliability
• Black nitride hardening treatment reduces friction between valve stem and guide
• Swirl polished finish for enhanced performance
• Provides improved cylinder flow for naturally aspirated applications
• Microhardness of 800HV minimum while maintaining good ductility beneath the hard nitrided layer
• Superfinish stem treatment reduces surface roughness to one-third that of chrome-coated valves

This complete set includes all 12 intake valves needed for rebuilding an RB26DETT cylinder head with factory hydraulic lifters. Supertech uses over 20 years of manufacturing experience and works closely with engine builders to provide continuous improvements and deliver the best possible product for each application.