The Metco Motorsports fuel rails are precision-machined from billet aluminum and are designed with the largest internal diameter available for this application at 11/16". This large internal volume ensures that the maximum amount of fuel is available at the injector and that pulses and pressure variations are minimized. The rails are machined with two 1/8" NPT ports at the front of the driver's side rail to allow for the installation of a fuel pressure gauge or sender, to serve as a convenient fuel supply for a nitrous injection system, or both. Stainless steel pipe plugs are included to seal any unused ports. The rails are black-anodized for long lasting surface protection, and precision-bent stainless steel mounting brackets with stainless bracket bolts are included.