Description*Free Shipping on all orders* Designed to fit the 2015/2016/2017/2018/2019/2020/2021 Subaru WRX/STi with stock muffler (most aftermarket mufflers will fit, please email to verify before purchasing) Made of high quality Aluminum Composite Professionally CNC machined Bumper/chassis mounted Comes predrilled 3 Different fin designs to chose from Hardware included Professional install recommended, but can be done in your driveway Made in CanadaDiffuser is NOT ASSEMBLED. Assembly takes 30 mins to complete. Straight forward, and easy to assemble. Pictures are included. Please contact us if you are having any issues assembling
