NOS is proud to now offer its popular Big Shot wet nitrous systems in black. These systems are adjustable from 190-300 horsepower and use a special fogging plate design that vastly improves nitrous flow, fuel atomization and mixture distribution. Our Big Shot plate utilizes a unique spray bar that is equipped with tiny orifices that are precisely located to efficiently dispense a powerful nitrous/gasoline mixture for unbelievable horsepower gains. Power output is adjustable from 190-300 horsepower simply by changing fuel and nitrous jets. This single stage system includes everything needed including 6AN feed line, 1/2 inch fogging aluminum plate, black 10 lb bottle, solenoids, hardware, and instructions to complete the installation. Fits Holley 4500 Dominator, 190-300 HP, includes Black 10 lb Bottle