AEM High Volume Fuel Rails are CNC machined from 6061 T-6 billet aluminum and feature a 1/2-inch fuel bore capable of flowing enough fuel to support most high-performance engines. This larger bore also dampens the back pulse created by oversized injectors in high-output applications. The AEM fuel rail also works perfectly with stock injectors. Each fuel rail includes an additional port for the installation of a nitrous set-up or external fuel pressure gauge. The ends of the fuel rail are tapped to accept either -6 or -8 line and a custom fitting allows for the use of the stock fuel hose. AEM's High Volume Fuel Rail kit includes new injector O-rings, fuel line fittings, comprehensive installation instructions and AEM decals.