Drift like a Pro: The Gokart PRO2 has an RR design, the rear engine and the rear-wheel-drive are set up like supercars. Keep Your safe: The Ninebot Gokart PRO comes with a high-strength steel frame that can carry a payload of up to 220 lbs and max slope of 15° Fun for All Ages: The adjustable frame length and steering wheel height can accommodate riders Warranty: Download the Segway app to control four driving modes, adjust the drifting assistant level, control the light effect, and much more. The manual handbrake can be used when drifting and can also be used as an effective way of braking during emergencies..syi