This is the motorized monocycle that propels a single rider up to 25 mph. Powered by a 31cc, four-stroke 1 1/2-hp engine, the wheel operates by using a centrifugal clutch on its inner steel frame to engage the larger 67" diam. outer flywheel that makes contact with the ground. It is steered by leaning to either side, and it can safely negotiate any dense surface such as pavement or grass. A fiberglass frame encloses the engine, drive train, and fuel tank, and provides a cushioned seat and convenient footrests for riders up to 6' 3" high when in a sitting position. The hand-holds' finger throttle provides progressive acceleration and the brake provides confident stops for riders up to 275 lbs. (minimum weight of 110 lbs. suggested for proper counterbalance during acceleration and braking). It operates for up to two hours on less than 1/2-gallon of gasoline. Not a street-legal vehicle. Special conditions and guarantee limitations apply. Please call 1-800-227-3528 for details. 67" Diam. x 14" W. (110 lbs.)