The NX Stage 1 EFI nitrous system is the top of the line EFI power booster on the market. From the billet aluminum and carbon fiber solenoids, to our patented Shark nozzle, this system screams nothing but quality. This system includes a single Shark nozzle, nozzle mounting bung, Lightning series solenoids, 3AN stainless braided solenoid to nozzle lines, 4AN fuel feed line, nickel plated fittings, wide open throttle switch, master arming switch and a 40 Amp relay and relay harness. This system includes jetting for 35, 50, 75, 100 and 150HP. The system can be easily upgraded later to support up to 250HP. This system includes the latest technology and the best components available. NX Lightning solenoids feature an improved flow path that eliminates sharp turns and expansion areas in the nitrous flow path. This keeps the nitrous in dense liquid form which makes more power on less nitrous. Lightning nitrous solenoids feature an integrated purge port which allows you to connect a purge valve directly to the body of the nitrous solenoid for clean looks and less plumbing. Lightning Series solenoids feature CNC aluminum bodies topped with Carbon Fiber cans for the ultimate in weight savings.