Turn the bass up to 11 with authorized Kicker enclosed subwoofers from OnlineCarStereo.com. These component woofers are pre-mounted inside a box so all you have to do is plug them in. We have vented Kicker subwoofers to produce maximum volume, sealed subwoofer enclosures for more accurate sound and bandpass boxes that combine both designs. Dozens of enclosed car subwoofers are available to fit your vehicle, listening tastes and budget. Order them online with free shipping or visit a brick-and-mortar store.