The Assassin .125-inch orifice bottom outlet solenoid base is ported and blueprinted for more flow. This solenoid has a special high amp coil and plunger combination that we developed for better progressive controller performance. This is the highest flowing .125 bottom outlet solenoid available. Many years ago Fast Lane did R&D on the .125 bottom exit and side exit nitrous solenoid project for the company that other nitrous system manufactures buy their solenoids from. Fast Lane knows what it takes to get maximum flow, quicker pulse rates and provide a bigger % window to progress in.