A ProStar engine is an off-road vehicle engine that has been designed, engineered, and manufactured from the ground-up by the experts at Polaris who share the same passion for off-roading as you do.   ProStar engines are purpose-built, tuned, and designed specifically for your vehicle and application. By leveraging cutting-edge technology from automotive influences, we have emerged as a trusted leader in off-road powertrain technology. With over one million engines produced we’ve created the perfect balance of engineered features to ensure you are getting the maximum performance in every vehicle.

  • Power Density - industry leading output by displacement

    Customized - tuned to perform with each vehicle application

    Light Weight - reduced engine weight to increase overall vehicle performance

  • Testing - extreme testing in the worlds harshest environments

    Riders First – core engineering teams dedicated to the riding experience with a passion for making the best possible engines and vehicles

    Engine Platforms - common core architectures within ProStar engine families

  • Design Simplicity - engines are designed to be easy to work on

    Designed with Vehicle - key access points planned with vehicle development

    Easy Maintenance - extended times between regular maintenance intervals and easy check points (Oil fill, drain, dipstick, coolant bleed etc…)

ProStar 30 ProStar 30
  • Powerful  single cylinder architecture with DOHC, 4 valves per cylinder, wet sump and light weight design specifically intended for ATV usage

    Optimized for the Sportsman family of ATV’s and the Sportsman Ace

    Specifically tuned for easy starting and great power delivery

ProStar 32 ProStar 32
  • Powerful  single cylinder architecture with DOHC, 4 valves per cylinder, wet sump and light weight design specifically intended for ATV usage

    Optimized for the Sportsman family of ATV’s and the Sportsman Ace

    Specifically tuned for easy starting and great power delivery

ProStar 570 ProStar 570
  • Powerful  570cc single cylinder architecture with DOHC, 4 valves per cylinder, wet sump and  light weight design specifically intended for ATV usage

    Optimized for the Sportsman 570 family of ATV’s, bringing the power of a twin cylinder but the efficiency of a single into the Sportsman platform.

    Specifically tuned to the demands of even the toughest Sportsman applications

ProStar 850 ProStar 850
  • Powerful twin cylinder architecture, single overhead cam, 4 valves per cylinder, twin balance shafts with a high flow airbox and dual bore throttle body

    Optimized for ultra-smooth power delivery and reduced NVH

    Specifically tuned for the most powerful and capable Sportsman applications

ProStar 1000 ProStar 1000
  • Powerful twin cylinder architecture, single overhead cam, 4 valves per cylinder, twin balance shafts with a high flow airbox and dual bore throttle body

    Optimized for ultra-smooth power delivery and reduced NVH

    Specifically tuned for the most powerful and capable Sportsman applications

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