Downpipe designed for: TOYOTA SUPRA MK V A90 TurboWorks downpipe is made of 100% stainless steel. Dimensions Inlet diameter: 134mm (outside flange), 115 mm (inside) Outlet diameter: 80mm (3.15 ") Downpipe designed for for: TOYOTA SUPRA MK V A90 Downpipe by TurboWorks, made of 100% stainless steel. Dimensions Inlet diameter: 134mm (outside the flange) Outlet diameter: 80mm (3.15 ")