More power. Designed to generate more power for uphill and off-road conditions, the MX650 is ready to rumble. Made to hit dirt hard and fast, this supercross-inspired Razor MX650 is a high performance motocross bike that runs on electricity no gas means youll go green while you go fast. The adjustable riser handlebars ensure a customized fit, and hand operated front and rear disc brakes and twist-grip acceleration control put the driver in command. , , He Razor Dirt Rocket MX 650 is suitable for children ages 16 and up and has a maximum weight capacity of 220 lbs. ,