MB QUART QMB-100X 4" Custom Fit Door Speakers for BMW 3 series E90 E91 E92 E93
MB QUART QMB-100X BMW 4" BMW 1 / 3 / 5 / E / F SERIES STRAIGHT FIT. BMW made it difficult to change the speaker to due to the three-hole screw fixing. Hifonics speakers requires NO cutting or modifying of the door panel to install.