Determined by the above features, you should realize that the Razor Go Kart can go pretty fast. Your kids should be old enough to be able to handle the speed and have the dexterity to maneuver the machine when cornering and avoiding obstacles along the way. As such, the minimum recommended age for this go kart is 8 with a 140lbs maximum weight limit. Now, If you are a go kart enthusiast then the Razor Go Kart is going to be perfect for you.