Max Flow 500HP This system comes out of thee box with everything you need to safely spray 200HP, and can spray up to 500 HP with additional jetting. Dry nitrous systems inject nitrous only into the intake plenum and require additional fuel to be added through the injectors using engine management software.This distribution ring has a diameter of 6 1/4 and is designed to fit most large cone style filters. This system includes everything needed for installation including the cone style distribution ring. 122 nitrous solenoid, hardware, wiring, wide open throttle switch, and brackets. This item is in the category "eBay Motors\Parts & Accessories\Performance & Racing Parts\Auto Performance Parts\Induction\Nitrous Oxide". The seller is "nitrousoutlet" and is located in this country: US. This item can be shipped worldwide.