Supertech Performance TIVN-1031-8 Black Nitrided Intake Valve Set Toyota 2ZZGE

These valves are manufactured from one piece of forged stainless steel for ultimate strength and durability, making them ideal for high-performance street applications and racing.

Key Specifications:

• Head Diameter: 34.00mm (standard)
• Stem Diameter: 5.48mm
• Length: 111.45mm
• Material: Black Nitrided Stainless Steel

Black Nitride Coating Benefits:

• Microhardness of 800HV minimum, higher than standard stainless steel base material
• Smoother surface finish than chrome-coated valves with less friction between stem and guide
• Harder valve seat surface that lasts longer with lead-free fuels, alcohols, and high-octane fuel mixes
• All valves are swirl polished with stem undercut and hardened tips
• Nitrided layer is adhered at a microscopic level and will not flake or break during valve-to-piston contact

These valves undergo a special heat treatment process that achieves the optimal hardness for each specific engine application. The black nitride surface treatment helps reduce friction and scuffing while improving wear and corrosion resistance for both daily driving and track use. Perfect for engine rebuilds, head upgrades, or performance builds requiring improved valve train components.