The ETS Axle-back exhaust for the 2015-2021 WRX and STI utilizes a full stainless steel construction. The axle back is 2.5" that mates to the stock 2 bolt flange. All gaskets are included to aid in ease of installation. This is the easiest way to get a little bit more noise and performance out of your WRX or STi.

THIS WILL NOT FIT THE 19-21 STI - MUST USE FULL CATBACK

Features:

- 2.5" SS Piping

- Includes Gaskets

- Quad 3.5" Double Wall tips

- Easy Installation

- Available with or without mufflers

- Increased Performance and Sound