Nitrous Oxide System - NOS CO2 Regulator 125 psi Outlet (15860NOS)Managing the pressure of your fuel nitrous system can be very important for safety reasons and consistency issues. NOS has the regulators you will need to keep your system perfectly balanced. Carbon Dioxide Pressure Regulators For High Perf. Fuel Injection For Large Nitrous Systems Preset 125 psi Simple Spring Change Features 1 Inlet and 3OutletPorts All 0. 25in. NPT Threads CO2 Regulator 125 psi Outlet Single In Dual Out Works Well W Air Shifters