SuperATV Up & Running Polaris RZR Trail S 900 Prop Shaft ReplacementA Reliable Polaris RZR Drive Shaft Replacement If you need to replace your old, worn out prop shaft, dont spend tons of money on and OEM replacement. Get an Up & Running Polaris RZR Trail S 900 Prop Shaft Replacement from SuperATV instead. Its just as good as OEM, but costs half as much. Up & Running Gets You Back on the Trail Our Up & Running components are designed to fix up your Ranger fast and get you back on the trail without a fuss. Our parts