The Turbosmart RacePort is famous for being an amazingly small and light BOV for turbocharged competition-level engines. Featuring our unique collar design and internal flow structures, it is 50% lighter and 25% smaller than the competition while flowing huge CFM - making it the highest flowing 50mm / 2.0" valve on the market. New for 2023! - The RacePort Plumback The GenV Plumback RacePort valve is a heavy-duty recirculating and plumb back diverter valve/dump valve that relies on the technology and advances that came before it, simply adding the ability and functionality to recirculate, rather than vent to the atmosphere. We've kept the weight low, the flow is high, and the feature menu full to ensure there is an option to suit your needs, all packaged in a sleek sleeper series RacePort Plumback which will fit any low-profile engine bay requiring a diverter and bypass-valve, capable of enormous flow and low compromise!