The AMS EVO IV/V/VI/VII/VIII/IX Fuel Rail provides increased fuel flow which is necessary at higher boost levels. This CNC?d aluminum rail comes anodized in Red, Black or Silver and includes our signature AMS turbo logo. With a 13mm diameter inlet and outlet it dwarfs the stock rail by over 160% in flow area. This is true bolt on part that will install with your factory fuel lines, fuel pressure regulator and works with all factory style fuel injectors. In addition it comes with a 1/8" NPT port where you can mount a fuel pressure gauge or use it for an auxiliary fuel port.