All SSV Works subwoofer enclosures are specially molded to fit your specific Side by Side Vehicle. They are custom designed for maximum speaker sound quality and speaker volume in an open air environment. The 100% fiberglass construction eliminates enclosure resonance and provides maximum durability. Your car or truck doesnt have speakers mounted above your head firing down at you or mounted high pointing outside the vehicle......Why should your Side by Side? SSV Works speaker subwoofer enclosures fully enclose the speaker while aiming into the cab of your vehicle for crystal clear loud music while traveling over 50 MPH All subwoofer enclosures ship with a texture coated black finish to match your factory interior but can also be custom painted to match you vehicles paint scheme they include stainless steel mounting hardware and easy do-it yourself instructions. includes a weatherproof 350 watt 10" speaker. This SSV Works subwoofer enclosure mounts behind the rear panel of the Polaris RZR XP-1000 2 and 4 seat** Does not fit 900S, 1000S or Turbo models.**