2015 POLARIS® RZR® S 900 EPS BLACK PEARLPower FeaturesNEW! 75HP ProStar® ENGINEThe New 75 HP ProStar® Engine delivers the power & acceleration you have been waiting for in a 60" RZR. With hallmark ProStar® features like dual overhead cams, 4 valves per cylinder and electronic fuel injection we've upped the torque 14% and increased HP by 40% over the RZR S 800.