Supertech - Black Nitride Intake / Exhaust Valves - B16A/B18C

Supertech apply more than 30 years of experience in the development of each and every Supertech racing valve we sell. Combine that experience with state of the art equipment such as ultrasonic tests, x-rays, laser measurement equipment, and applications like computerized Finite Element Analysis (FEA) and it is no wonder why Supertech has some of the best performance products on the market. Intake Valves  Head Diameter: 33.00mm(std) Dish Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 102.5mm Stem Diameter: 5.48mm Exhaust Valves Head Diameter: 28.00mm(std) Dish Material: Stainless Steel 23-8N Groove Type: Single Groove Length: 102.50mm Stem Diameter: 5.45mm ENGINES B16A, B17A, B18C1, B18C5