If you want the best, this is it. The NX Stage 1 EFI nitrous system is the top of the line EFI power booster on the market. From the highest flowing solenoids, to our patented Shark nozzle, this system screams nothing but quality. NX has a system for every EFI car in the world. Available in horsepower levels from 35-50-75 for most 4 and 6 cylinder cars, and up to 150 for 8, 10, and 12 cylinder engines. All NX EFI Stage One systems come complete with your choice of 5lb, 10lb, 15lb or 12lb composite nitrous bottle, stainless bottle bracket, Lightning solenoids, extra long stainless braided N2O line, and all necessary hardware to complete the installation.