The Polaris Sportsman 450 H.O. may have a misleading name, but its 325cc liquid cooled ProStar engine is the most powerful on our list, producing a claimed 31 horsepower. This ATV also tops our list in towing capacity (1,225 pounds), rack capacity (270 pounds total), and suspension travel (8.2 inches front, 9.5 inches rear). Speaking of suspension, the Sportsman 450 HO has a McPherson strut front end and independent double A-arm design out back with preload adjustable rear shocks. Other features include 6.5 gallons of storage space, on-demand all-wheel drive, and 10.5 inches of ground clearance.
