Bimmertech Alpha One Sub Woofer Upgrade for BMW and Mini
*Please note that these are ordered upon request as we require the vehicle's VIN to ensure the correct unit is ordered since each vehicle may require different units* DOUBLE THE PUNCH Take your BMW or MINI bass performance to a deeper level in less than an hour. If your stock speakers lack that tight, detailed notes and greater frequency range, a simple DIY swap for our woofer upgrades will deliver it all. Combined with our Alpha One Amplifier you’ll enjoy increased clarity, volume and custom