NEW! 168HP Prostar® Turbo H.O. Engine: For those who belive that there's never enough, the 168HP Polaris ProStar® Turbo H.O. engine takes extreme performance to a entirely new level. The ProStar® Turbo H.O. is the most powerful RZR® engine available from the factory for unequalled power, torque, durability and off-road excitement.
110 HP Prostar® 1000 H.O. Engine: Designed specifically for extreme performance, the Polaris ProStar® 1000 H.O. engine features 110 horses of High Output power and all of the hallmark ProStar® features. This includes dual overhead cams, electronic fuel injection, and 4 valves per cylinder. It also features light weight design with massive dual bore 48MM throttle bodies and long-tip fuel injectors giving the RZR XP® 4 1000 instant throttle response and quick to rev characteristics.