ROCKFORD FOSGATE GNRL-STAGE4ROCKFORD FOSGATE (GNRL STAGE4) 400 WATT STEREO, FRONT LOWER SPEAKER, REAR SPEAKER, AND SUBWOOFER KIT FOR SELECT POLARIS GENERAL MODELS The Stage 4 kit is the complete package that combines the Stage 3 kit with our rear speaker option. Adding our RM1 series mini speaker enclosure and clamp system, this kit adds the last bit of sound that you need. Simply plug in the harness, mount the speakers and rock out. Whether hitting the dunes or the trails, you