Feature 1, Made of high quality Aluminum alloy and durable in use 2, The adjustable fuel pressure regulator is directly installed on the guide rail 3, An additional 1/8th NPT port is included to accommodate a nitrous set up or fuel pressure gauge 4, High Volume fuel rails feature a 1/2 inch fuel bore to support fuel flow for applications up to 1000 horsepower 5, A custom fuel line fitting is included for the factory fuel line, and the ends of each rail are pre tapped to accept -6 AN or 9/16 inch * 18 fittings for users who wants to use custom fuel linesFeature: Made of high quality Aluminum alloy and durable in use. The adjustable fuel pressure regulator is directly installed on the guide rail. An additional 1/8th NPT port is included to accommodate a nitrous set up or fuel pressure gauge. High Volume fuel rails feature a 1/2 inch fuel bore to support fuel flow for applications up to 1000 horsepower. A custom fuel line fitting is included for the factory fuel line, and the ends of each rail are pre tapped to accept -6 AN or 9/16 inch * 18 fittings for users who wants to use custom fuel lines. Specification: Condition: Brand New Material: Aluminum Alloy Color: Black Size: Approx 32.5*4.5cm/12.8*1.8in Package Weight: Approx 591g Fitment: For Honda Acura Integra Civic Del Sol Si B16A B16A1 B16A2 B16A3 B18C B18C1 B18C5 B20B B20Z Package List: 1 * Fuel Rail Kit Note: 1. Profession Installation is highly recommended. 2. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.