2013 Yamaha PW 50, 2013 Yamaha® PW 50 THE FIRST CHOICE FOR FIRST TIMERS With a seat height of just 19.1 inches, adjustable throttle and fully automatic transmission, the 2013 Yamaha PW50 ensures your kids first ride is as rewarding as his first steps. Features Fully automatic transmission means no shifting required; the PW50 is a total twist-and-go package. Torque-tuned, spunky little 49cc two-stroke is built to thrill without intimidating beginners. A seat only 19.1 inches high makes this one the logical choice for the littlest rider in the group. An adjustable throttle stop screw lets the adult in charge gradually increase speed as skills improve. Shaft final drive makes chain maintenance a thing of the past.