2010 Polaris Sportsman 550, Well Maintained and Ready to roll! - The 2010 Polaris Sportsman 550 ATV is engineered for extreme off-road performance. This powerful model is ideal for ATV trail riding, ATV hunting, and is the perfect utility ATV. Key features are: 42 horsepower, 550 cubic centimeter SOHC EFI engine Rolled Independent Rear Suspension (IRS) Superior ergonomics