Exhaust valve NISSAN Pulsar GTi-R/ RNN14 Chrysler 4L V8 Fuel Injection -

4L V8 Fuel Injection - All Models 2005 2007 Ford Five Hundred 3

5i 2009-2012

0L L4 Gas 2008-2008 Non-US Models Audi A4 Quattro 2

8L (2ZZGE) DOHC 203-6301

8i 1996-2004

Exhaust valve NISSAN Pulsar GTi-R/ RNN14 Chrysler 4L V8 Fuel Injection -The production of our race valves begins with a one piece forging where the valve head is forged in a slow two step process to maintain a good material flow. Then it is machined on the CNC in several stages to ensure the precision of the final dimensions. Then, we perform another thermal treatment for relaxation, followed by nitride curing (or coating process depending on the application). Finally, we perform one more grinding followed by a patented