Supertech Performance MAIVN-2304D-8 Black Nitride Intake Valve Set +1mm Oversize Mazda Ford Duratec

These valves are manufactured from one piece of forged stainless steel for ultimate strength and durability, featuring a 36.00mm head diameter (+1.0mm oversize) with a flat face design.

Key Specifications:

• Material: Stainless Steel 21-4N
• Head Diameter: 36.00mm (+1.0mm oversize)
• Length: 103.40mm
• Stem Diameter: 5.48mm
• Groove Type: Single Groove

Black Nitride Coating Benefits:

• Microhardness of 800HV minimum with good ductility beneath the hard nitrided layer
• Smoother surface finish than chromed stems with less friction between stem and guide
• Harder valve seat surface that lasts longer with lead-free fuels, alcohols, and other high-performance fuel mixes
• Compatible with all seat types including nodular iron, steel powder metal, hard aluminum-copper, and beryllium copper seats

Upgrading to performance intake valves increases airflow and engine performance, and is recommended to be paired with new valve springs and valve stem seals for optimal high-RPM operation. Supertech provides the racing market with superior valve train components for drag racing, rally, road racing, and virtually every type of motorsport.