If you’d like to upgrade the OEM speakers in your 2nd generation 2016, 2017, 2018, 2019, 2020 and 2021 Mazda CX-9 SUV, you’ll first have to take off the plastic interior door panels. Check out the DIY directions for the procedure (with the compatible replacement aftermarket speaker sizes) by clicking on the text link or thumbnail image below.
2016-2021 Mazda CX-9 Interior Door Panels Removal Guide
