The Borla catback exhaust for the 2015 and up WRX and STI sedans is setup with 3" piping for optimal flow and power potential from any stock turbo setup or larger, bolt on turbo setup. The rear of the exhaust is just like a stock style with each side getting a dual tip. The tips are 3.5" wide and feature round, rolled, angle cuts to make it known you picked a great exhaust. Borla's mufflers always sound perfect for the street with aggressive but streetable sound.
Borla Limited Warranty