 The Metco Motorsports fuel rails for the GM LS1 application are precision-machined from billet aluminum, not commonly available extruded rail stock like other fuel rail kits.
Because their rails are CNC-machined from billet, they were able to design them with the largest internal diameter available for this application at 11/16".
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.
The rails are clear-anodized for long lasting surface protection, and precision-bent stainless steel mounting brackets with stainless bracket bolts are included.
As shipped, this kit includes the rails with mounting brackets only. For users seeking a plug and play installation, a pre-fabricated fuel line crossover with swivel fittings, a stainless steel adapter for the factory feed line, and AN port plugs for the front of each rail can be added. These rails are also available in a high-polished finish.
Note 1: The female threads machined at each end of the rails is 8AN straight thread (3/4"-16).
Note 2: In some installations using a crossover line, it may be necessary to locate the crossover at the front of the rails, using the port plugs at the rear.
|  | 
|
