Skunk2's Composite Fuel Rails are specially manufactured by using Skunk2's very own carbon impregnated aerospace thermo-polymer composite. The highlight of this material is its ability to insulate the fuel from both radiant and conductive heat transfer under the hood. A cooler fuel means automatic increase in horsepower and torque. The real world testing has given as high as 3% power gains. The other striking feature is a large 0.625" internal bore with radius inlets to the injectors to improve flow. This feature is not possible with extruded and drilled aluminum fuel rails that have sharp angles internally where the main bore meets the injector bores. You can use Skunk2 Composite Fuel Rails with factory fuel lines and fuel regulators.
