50CC Mini Dirt Bike Reviews In general, as long as protective gear is worn, riders will not reach a velocity that poses a threat to their health. Keep in mind that larger riders will slow down the top velocity of any dirt bike, so finding a mini dirt bike that is properly sized for your child is very important. We suggest finding a bike that has a maximum weight limit about 25% higher than your child’s weight. For example, a bike that can handle 100 pounds is ideally suited to a child that weighs 75 pounds. This will allow them to grow into the bike and will allow you to retain the machine longer. For More Information Visit http://minidirtbikers.com/