Skunk2 Composite fuel rails for 2006–2009 Honda Civic Si employ a carbon‑impregnated aerospace thermo‑polymer composite that cuts weight and lowers fuel temperatures versus aluminum. They feature large 0.625 in. internal bores, -8 AN inlet/outlet fittings and additional fuel pressure ports, support OEM regulator provisions and are rated to support up to 1,200 hp while remaining compatible with common fuel types.
Skunk2 06-09 Honda Civic Si Composite High Volume Fuel Rails