Supertech Black Nitrided Intake Valve Set of 8

Production of Supertech racing valves begins with a one piece forging, where the head of the valve is forged under a slow two step process to keep a good material grain flow. The forging is then CNC machined in several steps to ensure the precision of the final dimensions. We then do another heat treatment for stress relieving followed by a nitride hardening treatment (or coating process depending on the application). Lastly, we do one more grinding, followed by our patented Superfinishing of the surface to ensure that each valve is free of any imperfections and the dimensions are precise.

Supertech apply more than 30 years of experience in the development of each and every Supertech racing valve we sell. Combine this 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.

While this is more than most manufacturers we don’t stop there. We also do extensive testing working very closely with many of today's top engine builders in order to continuously improve our products. All of this is meant to insure Supertech's industry leading reputation for high flow rates, durability and uncompromising quality.

• One piece valves
• Machined to strict tolerances
• Valve tips hardened to beyond 52HRc
• Superfinishing and Black Nitride reduce surface roughness to 1/3 of chrome coated valves
• High flow rates achieved through optimal design for each engine

• Head Diam: 35.00 (standard)
• Material: Stainless Steel 21-4N
• Groove Type: Single Groove
• Length: 103.3mm
• Stem Diam: 5.46mm

• 8 x Black Nitrided Intake Valves