Fitment: (2014-2015) Polaris RZR XP 1000 and Front XP 4 1000 stock doors. Take your stock doors to the next level with a set of knee pads for your XP1K & XP1K4. These stock door knee pads can be used with Pro Armor Lower Door Inserts, Stealth Doors, or just your Polaris Stock Doors. Made from durable and UV protected marine grade vinyl they not only provide added comfort while driving but also allow for additional storage. Our knee pads also feature a zippered pocket that has good room to hold several items.