Polaris RZR4 800-XP4 900 Complete Door Kit. These fully operational doors are constructed from mild steel tubing and powder-coated for excellent durability. Plastic skins are made from top quality thermoplastic olefinic elastomer. This high-impact polypropylene offers a high-gloss finish with excellent durability to endure extreme weather and temperature conditions. Plastics are UV-stabilized, resistant to chemicals and available in several colors. Doors mount using existing mounting locations on the RZR and open close using a simple to use slam latch assembly. Doors really add to the looks of the vehicle and help keep the elements out of the cab area. Take your toy to the next level !!