Description:Designed for aftermarket LS Intake manifolds these aluminum EFI fuel rails are capable of feeding 1,100+ HP engines. Featuring 1/2″ diameter inner bore to decrease fuel pressure drop, help cancel out back pulses, and distribute fuel to all injectors properly. These High Performance Fuel Rails come with matching fittings, crossover hose and hardware.Package Contents:2 x LS1 Fuel Rails1 x Crossover LineAn6 Fuel Line AdaptersBolts, Nuts, WashersMounting Tabsequivalent or dorman manifolds.