SuperATV - POLARIS RZR RZR 4 900 REAR SEAT CONVERSION KITGet More Cargo Space When you take your four seater out for a weekend ride, you end up throwing all your gear in the back seat where it turns into a disorganized mess and can damage your floorboards. Make your back seat better with SuperATVs Polaris RZR 4 900 Rear Seat Conversion Kit. It replaces your rear seats with UHMW panels so you have a safe place to secure cargo. It also gives you the perfect RZR dog seat that your pup will love. Versatility