Bmw Stereo Upgrades. These bikes come with a pair of 525-inch speakers in the front fairing. We usually use a set of Polk Audio MM-Series speakers in these locations and the system sounds really good.
1 series E81E82E87E88 2004 - 2010 1 Series F20F21 2011 - 2019. Free shipping on BMW Z4 car stereo speakers subwoofers and installation accessories. I was looking for.
This consists of upgrading the front door speakers.
Install invisibly your car looks stock. BMW Audio Upgrade 11 Our first upgrade is replacing the original BMW speakers. You need a better aftermarket head unit and if you want to go further upgrade speakers and add a subwoofer to your Bmw E46. This consists of upgrading the front door speakers.