This is the Invidia 3-Inch Downpipe To Stock Cat-Back Exhaust Adapter. This adapter will allow you to adapt the tail-end of a 3-inch downpipe to your stock, or a 2.5-inch cat-back exhaust system. This will ensure a proper mating fitment between the two exhaust components to ensure for a proper exhaust flow without any exhaust leaks.
DETAILS:
Notes:Donut Gasket SOLD SEPARATELY
Fitment:
2002-2021 Subaru WRX
2004-2021 Subaru STI & Type-RA
2004-2013 Forester XT
2005-2012 Legacy GT & Spec B
2005-2009 Outback XT
All Subaru Models fitted with 2.5in Stock downpipe w/ 3in cat-back exhaust system)