BMW Harman Kardon Subwoofers Bass Speakers’ condition is used. UNDER SEAT BASS SPEAKERS!!! Genuine harman kardon top HiFi under seat speakers (NO CASING). Fits all F series car. (You just need to place to correct casings). Please check the last photo on the advert!!! F30 F31 F32 F33 F36 F80 F82 F83 M3 M4 F20 F21 F22 F23 F87 M2. F06 F12 F13 M6. Working perfect all Genuine Harman Kardon Bass Speakers.