Exhaust valve NISSAN SKYLINE RB25 24v DOHC/SOLIDLIFTER CONVERSION/ Skyline RB25 DET 6cyl/24v 92-01 Alpine 9D 1996-2008

Exhaust valve NISSAN SKYLINE RB25 24v DOHC/SOLIDLIFTER CONVERSION/ Skyline RB25 DET 6cyl/24v 92-01 Alpine 9D 1996-2008The 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

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