Skunk2 designs their fuel rails for the Civic Si using a proprietary carbon-impregnated, aerospace thermo-polymer composite material. It is 33-percent lighter, 60-percent stronger, and operates up to 100F cooler when compared to aluminum. This design insulates fuel from radiant and conductive heat transfer which results in increased horsepower and torque.These rails use a 0.625-inch internal bore and are machined with a smooth interior finish. Skunk2 fuel rails support up to 1200hp, will work with factory fuel systems, and are compatible with all fuel types.
Integrated -8 AN inlet and outlet for easily customized fuel lines
Features additional 1/8-inch NPT fuel pressure port.
Dimensions - 16 x 5 x 3 in.
Honda Civic Si 2006-2011