The KTM 50 SX is no toy. It's a real competitive motorcycle that you can use out on the track to show how good you really are. To prove that, just take a look at the long suspension travel and the front and rear disc brakes. And when you ride it and feel the power, you know with this bike you can win money in this class. Adjustable seat from 650 mm for real champs between six and nine years.