BOOST Products Exhaust Cutout Valve 63.5mm (2.5") - Vacuum controlled - OPENING

64mm (2.5") Exhaust Cutout Valve Vacuum Controlled - OPEN Premium stainless steel 2.5" exhaust bypass valve, without accessories High quality exhaust flap for controlling the Sound of exhaust systems / mufflers with 63.5mm / 2.5 inch diameter Mode: If you're looking for a valve that's closed at idle, then this is the one for you. The flap is closed at idle (vaccum pressure) and with rising pressure, ie opening throttle, or transition to positive pressure in turbocharged engines, opens the flap.Our exhaust cutout valves are solid and absolutely accurate working. Attention was paid to stable and precise components. Not like some cheap-flaps, which are offered everywhere. So the bearing of the cutout valve mechanism is made of ceramic and not - as with other flaps - made of plastic, which does not withstand the heat. The housing has a bead, which determines the specified diameter. This results in the use of exhaust pipes with 1.5mm wall thickness, an edgeless inner diameter transition, wh