Nitrous Express GM EFI Dual Nozzle Nitrous Kit (100-300HP) w/15lb BottleWant more horsepower without the hassle and expense of going direct port? Then the NX dual stage nitrous systems are the way to go. Having two stages means you double your power options at the click of a switch. The dual 'Shark' nozzles give adjustability from 50 to 300 wheel horsepower in 25hp increments. System comes complete with 15lb nitrous bottle, stainless bottle bracket, Lightning solenoids, extra long stainless braided N2O line, and all