The Kicker VSS Subwoofer and Amp Installation Kit allows you to upgrade the audio system in your compatible 2007-2010 2-door Jeep Wrangler (not compatible in vehicles with Infinity premium audio systems). Included is a 10 square Soundgate PowerStage Series subwoofer plus a digital signal processor with a built-in 4-channel amplifier rated at 50W RMS. The amp has pre-set high-pass filters EQs and a speaker time alignment. This car subwoofer kit also comes with a custom-engineered mounting bracket a molded plastic enclosure for the back of the rear seat and a harness that connects the processor to the stereo. All power and signal wiring is pre-cut and terminated.