His age is 9, he more than touches the pegs with knees bent and is EXTREMELY strong and self aware. I know in Maine I dont see any "legal" age as it's more parental discretion... he has to wear a helmet ( my rules, but also state law ) as well as jeans, boots, and gloves... Im having trouble finding a good jacket so he may wear a CarHart jacket or some other heavy material. I am also considering putting a backrest on ( to secure him from sliding off the back ) and putting a vest on that has handles for him to hold. I was curious as to what others thoughts, concerns tips and tricks are? I rode when I was about his age with my grandfather and remembering the feel, the thrill, the sights and sounds and enjoying every second of it.