Focal IFBMW-S 4" 40W RMS 2-Way Integration Series Component Speakers
Focal Integration IFBMW-S Integration Series Plug & Play component speaker system for select 2006-up BMW 1-Series, 3-Series, and X1 models at Crutchfield
Amazon.com: Focal IFBMW-S 2-Way Component Dedicated Kit Compatible with BMW Vehicles : Electronics
Installing a Focal IFBMW-S 2-way component kit dedicated to BMW® 1/3/5 series & X1 - YouTube