NOS Add 200+ Rear Wheel Horsepower (RWHP) to the already potent Gen III Hemi 6.2L supercharged Hellcat engine. Choose from the traditional blue or new black (bottle & components) for a stealth appearance Engineered & dyno tested nitrous system includes everything needed for and easy bolt-on installation (94mm billet wet plate, mini 2-stage nitrous controller, 10 lb. bottle, Pro-Race solenoids, and all the required hardware).