Subwoofer Haut-Parleur pour BMW 1er E81/82/87/88 BMW X1 E84 3544050750715 | eBay
Speakerplans.com
X1 sub
Portronics Pure Sound Pro X1 100W Bluetooth Soundbar with Wired Subwoofer, 2.1 Channel, Bass Blast, Bluetooth 5.3v, EQ Modes, Aux in, Optical in, USB Drives & Remote Control(Black) Price: Buy Portronics Pure
Sous-plateau en aluminium Pro-JectPro-Ject X1/X2 Alu Sub Platter | Noir et Blanc
2014 x1 adding subwoofer - XBimmers | BMW X1 Forum