Scope of delivery: - Flap control ø 63.5mm closed overpressure controlled exhaust flap stainless steelDescription: - the flap is closed and opens in the event of overpressure - Inner diameter ø 63.5mm - Outer diameter ø 74mm - is made of stainless steel - adjustableWe can supply you with inexpensive, high-quality stainless steel exhaust flaps for your exhaust system. These are then used to regulate the volume of the exhaust.The way it works is quite simple:When closed, the exhaust gases are routed through the silencer, as soon as the flap is open, part of the exhaust gas passes through a continuous pipe, making the exhaust louder. The overpressure-controlled flap is closed in the underpressure range and opens as soon as overpressure / boost pressure is created. A hose is laid from the intake manifold to the overpressure box of the flap or the flap is controlled via a remote control or switch. For this purpose, a pulse valve is installed in the hose.Suitable for: - Exhaust systems with 76mm diameterOptional matching parts: - Remote control for flap control