Top FeaturesFully Automatic Transmission: Fully automatic transmission means no shifting required; the PW50 is a twist-and-go package.Entry-Level Two-Stroke Motor: Gutsy 49cc two-stroke is built to thrill without intimidating beginners.Ultra-Low Seat Height: A seat only 18.7 inches high makes the PW50 the ideal choice for the littlest rider in the group.Adjustable Restrictor: An adjustable throttle stop screw lets the adult in charge gradually increase speed as skills improve.Low Maintenance Requirements: Shaft final drive means no chain maintenance, while Yamaha's exclusive autolube oil injection system eliminates the need for fuel/oil premixing.