Keep Your Ride Cool So you plowed into a tree and now your Polaris RZR Trail S 900 won™t get out of limp mode. Replace your busted stock radiator with SuperATV™s Heavy-Duty Radiator. It™s a replacement and an upgrade. With 26% more efficient cooling than stock combined with more robust construction, you™ll ride hard and stay cool. Install It Fast Installing a RZR radiator is usually a rough job. Cramming your rad in when you don™t know what you™re doing can take hours. Luckily, our radiator is precision-made with tight tolerances. You get access to full-color instructions to walk you through installation step-by-step, so even a rookie can get it mounted in no time.