The Segway X160 is a powerful dirt bike that can hit a top speed of 37 mph whereas the Segway X260 can hit a top speed in excess of 46 mph. Although the X160 is fun and exciting for both adult and youth riders, the X160 is better suited and safer for the youth rider who is a beginner in dirt biking, because it is smaller in size with less torque power and a lower high-end speed than the X260.