The Skunk2 Composite Fuel Rail is a high-performance upgrade designed for K-Series engines found in the 2002–2006 Acura RSX and 2002–2005 Honda Civic Si. Engineered using a proprietary carbon-impregnated aerospace thermo-polymer composite, this fuel rail provides superior thermal insulation and durability compared to traditional aluminum rails.

Operating up to 100°F cooler than aluminum, the Skunk2 Composite Fuel Rail significantly reduces heat transfer to the fuel, helping maintain consistent fuel temperatures and pressure—resulting in improved horsepower and torque. With a 0.625-inch internal bore, it provides excellent fuel injector pulsation dampening and is optimized with radius-cut injector outlets for smooth, uninterrupted flow.

Designed to support up to 1,200 horsepower, the rail includes -8 AN inlet and outlet ports, OEM fuel pressure regulator compatibility, and a 1/8-inch NPT port for pressure monitoring or gauge installation. It works with all pump and race fuels, including alcohol.

Key Features:

• Supports up to 1,200 horsepower

• Composite material is 33% lighter and 60% stronger than aluminum

• Operates up to 100°F cooler for improved fuel system performance

• 0.625" internal bore for optimal injector pulsation dampening

• Radius-cut fuel injector outlets for superior flow characteristics

• Integrated -8 AN inlet/outlet for custom fuel line configurations

• OEM fuel pressure regulator provisions included

• 1/8" NPT port for pressure gauge or sensor

• Compatible with all fuel types, including alcohol-based fuels

Note: Not compatible with 2006–2011 Civic Si – use P/N 350-05-5015

Vehicle Fitment:

• 2002–2006 Acura RSX (K-Series)

• 2002–2005 Honda Civic Si (K-Series)

• 2004–2008 Acura TSX (K-Series)

• 2003–2011 Honda Element (K-Series)

• Honda K20A Engines (Universal fitment)

What's Included:

• (1) Composite Fuel Rail

• (-8 AN fittings and mounting hardware not included unless specified)