RZR Bump Seat & Safety Harness 570 800 XP900RZR Bump Seat Kit with 2" Safety Harness for 2 & 4 Seat 570 800 & XP900 Now you can take the whole family on UTV adventures! Upgrade your RZR with a 3rd seat made just for kids, 60 lbs or less! Designed to mount over the middle bump between the front or rear driver and passenger stock Polaris seats. Installation is quick and easy using existing factory seat belt hardware. This kit also includes a 4 point safety harness in your choice of color, so you