razor mx500 dirt rocket 36v electric toy motocross dirt bike, red (2 pack) razor get rockin' with not 1, but 2 razor mx500 kids dirt rocket electric dirt bikes. the mx500 dirt rocket is a high-performance, electric-powered dirt bike with authentic dirt bike frame geometry and supercross-inspired styling. with a high-torque, powerful 500 watt electric motor, large 16" and 14" pneumatic knobby tires for maximum power transfer and shatterproof plastic fairings and fenders, this mx500 dirt rocket is ready to hit the road. offering dual suspension and speeds up to 15 mph and up to 40 minutes of continuous use, you'll be the king of the dirt hill on the mx500 dirt rocket. the mx500 can travel up to 10 miles on a single charge and accommodate a 175 lb. rider max weight.