This NX direct port system provides the ultimate in cylinder to cylinder distribution. This system utilizes the patented NX in.SX2 in. dual stage nozzles that offer two separate stages on one nozzle! Nitrous system comes complete with nitrous bottle, 8 aluminum / carbon fiber Lightning solenoids, stainless bottle brackets, stainless hard lines, 6 SX2 nozzles, jetting, and all necessary electrical components. This system requires the drilling and tapping of intake manifold. (150-750HP) Includes 4 DOUBLE HOLE BLACK RAILS