Provides powerful deep bass, and also assists in clean sound reproduction from all vehicle speakers. This is achieved by its integrated 100W amplifier and a passive crossover network. The self-contained unit mounts in the trunk of 4-door models and behind the rear seat in 5-door models. Manufactured for Subaru by kicker.

Fits WRX OR STI 4 door with Navi. 

 May not be installed in conjuction with cargo tray, cargo net or rear seat back or cargo nets 4door.  New in box from Subaru