The NX 2 Cylinder Piranha Nozzle system is designed for all 2 cylinder applications without an existing fuel system for the nitrous kit. This system comes complete with new Lightning Solenoids, fuel pump, 2.5lb bottle, stainless steel bottle bracket, nitrous and fuel lines, relay and wiring harness, WOT activation switch and Jetting for 20, 30, 40 and 50hp.