Billet Crossbar Plate System Dry Single Stage 100-500HP 4500 Flange 12LB Nitrous Express NX 66147-12 - USA-NX-66147-12 - Billet Crossbar Plate System Dry Single Stage 100-500HP 4500 Flange 12LB Bottle The Nitrous Express Dry Billet Crossbar Plate System is set up for those running an aftermarket EFI system with capabilities of nitrous fuel enrichment. This system is the quickest and easiest way to add nitrous. Nitrous Express will provide the necessary PPH(Pounds Per Hour) flow data to easily tune your aftermarket EFI Systems fuel enrichment. This system is quick to install, simple to tune and capable of spraying the most horsepower of any nitrous plate on the market! This system comes complete with a Billet Crossbar nitrous plate, billet and carbon fiber Lightning series solenoids, solenoid bracket, billet y fittings and distribution blocks, stainless braided nitrous lines, wide open throttle switch, master arming switches, and all the necessary hardware and electrical to complete the system. This system is offered in 3 different setups for both 4150 and 4500 flange intakes. Single stage - This is a single dry stage of nitrous capable of spraying up to 500 horsepower. Dual Stage - This system is capable of dual-stage operation with the first spraying up to 500 horsepower and the second able to spray up to 400 horsepower for a combined potential of 900 rear-wheel horsepower! Quad Stage - This is the highest horsepower nitrous plate system on the market and capable of spraying 4 completely separate stages of nitrous. The first two stages can spray 500 horsepower each! The last two stages can spray 400 horsepower each for a combined 1,800 rear-wheel horsepower! THE NITRO BOTTLE IS EMPTY!