Car speaker mounts Code 271023-12-0 for BMW Z4 E89 2009-2016. The adapter rings are the ideal solution for upgrading the vehicle's audio system. The installation of the rings is simple and high quality, allowing the replacement of the original speakers with aftermarket ones. The rings are designed for 200mm speakers, offering flexibility in choosing speakers that fit your needs. The rings are made of durable materials, ensuring the long-lasting performance of the audio system. Ring dimensions: 200mm. Packaging includes 2 adapter rings.