This downpipe adapter for the Subaru WRX and STi is the perfect solution to the problem of matching an 3-inch aftermarket downpipe to a catback system that uses the stock 2.5in taper. The 3-inch downpipe adapter plate allows you to install the factory donut gasket on the end of any 3-inch flat flange downpipe, to ensure a perfect seal with the factory or any other 2.5in tapered catback exhaust system (Cobb Tuning, Blitz, Borla & Greddy just to name a few).
Now you can bolt up virtually any downpipe/catback combination on the market without having to worry about exhaust leaks or installation nightmares. The 3-inch downpipe adapter requires a flat flange gasket as well as an OEM donut gasket for proper seal. Because this will modify your downpipe, longer downpipe bolts may be necessary.
Nobody has reviewed this product yet! Want to be the first one?