Vibe Car Amplifier + Subwoofer + Speaker Upgrade Kit for BMW F30, F31, F34 3 Series 2011 – 2019VIBE Presents the OPTISOUND BMW Plug and Play Full speaker upgrade! 1 X POWERBOX65.4M-V7 AMPLIFIER. A - Changing speakers will change in level of difficulty from vehicle to vehicle but the VIBE Optisound upgrade is designed to ensure that you have everything you need to make the job as easy as it possibly can be.
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