This 2015 WRX exhaust adapter mates directly with your stock 2015 WRX exhaust flange and gets rid of any exhaust leaks when combining with the Mishimoto 2015+ WRX/STI Cat-Back Exhaust . Whether you are entering your 2015 WRX in the local rallycross or lapping at your next track day, trust Mishimoto and our line of 2015 WRX parts to keep your WRX cool. This 2015 WRX exhaust adapter, like our entire line of 2015 WRX parts, includes the signature Mishimoto Lifetime Warranty.