Supertech Performance BMIVN-1006/L-8 Black Nitrided Intake Valve Set BMW Engine - for S14

These high-performance valves deliver enhanced durability, reduced friction, and superior heat management for both street and racing applications.

Black Nitride Technology:

• Advanced thermal-chemical hardening process creates a hardened surface layer with minimum 800HV microhardness while maintaining excellent ductility
• Ultra-smooth surface finish reduces friction between valve stem and guide for improved efficiency and reduced heat generation
• Nitrided layer integrates at the microscopic level with base material, preventing flaking or breaking during piston contact events
• Harder valve seat surface extends service life when using lead-free fuels, alcohol, nitrous, or high-octane race fuels
• Complete valve coverage unlike chrome coating which only treats the stem
• Superior corrosion resistance ideal for E85 and methanol-fueled engines

Specifications:

• Head Diameter: 37.00mm (standard size)
• Stem Diameter: 6.98mm
• Overall Length: 123.00mm
• Material: Black nitrided stainless steel
• Features: Swirl polished, stem undercut, hardened tip
• Quantity: 8 valves per set

Important: Must be used with triple groove valve keepers such as Supertech KPR-VW7-T or OEM equivalent keepers for proper installation and operation.

Supertech Performance leverages over 20 years of racing valve manufacturing expertise, working closely with professional engine builders to deliver products focused on high flow rates, exceptional durability, and uncompromising quality. These valves are compatible with various valve seat materials including nodular iron, steel powder metal, hard aluminum-copper, and beryllium copper seats.