i sold my street bike about three years due to all the idiots that dont watch out for bikes , had a few close calls that scared the heck out of me . imo i would get a new bike and your son , the best thing that i did was get my boy a pw50 . if my buddies back out on riding my little boy never says i got other plans or my girlfriend making me do this or that (at least not yet) . getting him a bike also helps him mind a little better because if he doesnt , i wont let him go and man does he really get bummed out then . i luv teahing him how to take on hills and ruts , to sum it up it is great quality time with your kids . :)