Race-tested by record setting professional racers, the Aeromotive Pro Stock 2-Port fuel pressure regulator was designed to be used with the Aeromotive A2000 Fuel Pump (027-11202) and other drag race style pumps in single carburetor applications. Utilizing an extremely light weight titanium valve, and an innovative opposed-spring design, the Pro Stock Regulator is engineered to be the quickest responding, most reliable, high flow regulator on the market.