I've spotted a Z4 Coupe stealth 10" subwoofer on eBay.
http://www.ebay.co.uk/itm/BMW-E86-Z4-Coupe-Stealth-box-and-10-Subwoofer-/161734469183?
I always fancied one of these but I could never find one when I had my Coupe
http://www.ebay.co.uk/itm/BMW-E86-Z4-Coupe-Stealth-box-and-10-Subwoofer-/161734469183?
I always fancied one of these but I could never find one when I had my Coupe