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 are sure to be the center of attention of any get-together. RNGR-STAGE4 Installation Estimated Installation Time: 3 HOURS FEATURES AT A GLANCE PM-CL3B: Punch Diecast Clamp for Polaris Lock & RideA(R) roll cage - Black (Pair) RM1652W-MB: Prime Marine 6.5" Rear Speakers in Enclosure - Black (Pair) Direct connect wiring harnesses for RANGER models PMX-2: Compact AM/FM/WB Digital Media Receiver 2.7" Display RFRNGR-PMXDK: Installation Kit for Dash *Antenna not included Enclosures for speakers/subwoofer integrate with no loss of passenger space RM1652B: Prime 6.5" Full Range Speakers - Black (Pair) RFRNGR-FSE: 6.5" Front Lower Speaker Enclosure (Pair) RM110D2B: Prime 10" Dual 2-Ohm Subwoofer Black RFRNGR-FWE: 10" Front Subwoofer Enclosure TM400X4ad: Power Marine 400 Watt Class-ad 4-Channel Amplifier RFRNGR-K8: 2-Seat or 4-Seat Amp Wire Kit Element Ready(TM) to withstand the harsh outdoor environment like dust, water, and UV rays RFRNGR-RSW16: Polaris Ranger Rear Speaker Add-on Harness Element Ready(TM) | Motorsports All components are protected against harsh outdoor elements like Dust, UV, Temperature, Water, Corrosion & Vibration. IPX6 Water Intrusion Rated Water projected in powerful jets from any direction shall have no harmful effects. ASTM B117 & D4329 Tested ASTM B117 & D4329 Tested MODEL 2015 2016 2017 2018 2019 2020 2021 MIDSIZE 570 1 - - - - - - - CREW 570-4 1 - - - - CREW 570-6 1 - - - - CREW XP 900 1 - - - - CREW XP 1000 EPS 1 - - 2 - - - CREW DIESEL 1 - - - - FULL-SIZE XP 900 1 - - - - FULL-SIZE XP 1000 EPS 1 - - - - - - FULL-SIZE DIESEL 1 - - - - FULL-SIZE DIESEL HST DELUXE 1 - - - - FULL-SIZE RXR 1 - - - - FULL-SIZE 500 1 - - - - - - - FULL-SIZE 570 1 - - - - FULL-SIZE EV 1 - - - - - - - FULL-SIZE EV LI-ION 1 - - - - - - - 1 Compatible with Polaris heater & defrost option2 This model uses the Gen-1 dash from 2015