The ZDSB200 is a high-quality 8-inch subwoofer kit for a variety of different BMW models (for specific models please view vehicle applications). The subwoofer features an 8 inch cast basket with a 2” voice coil, sandwich cone and neodymium motor. Offering up to 150W max power this subwoofer is a fantastic improvement over the factory offering with the increase in bass truly transforming the audio listening experience. This kit is simply plug and play and replaces the original subwoofer to provide fantastic performance across the entire frequency range. This kit can even be paired with the ZDSB100CS speaker kit to fully upgrade your cars audio output providing a drastic improvement over the standard factory speakers.