I guess I am just thinking about the size of my nephews that age (7 & 9), they are both too small. We looked at 65's for the older one, but maybe he is just small for his age. I do know they are fast bikes for their size. I've worked on a few when I was wrenching in shops.
well he has about 5 hours on it now and is having a blast!! once it's warmed up he can start it and he gets into 3 gear and rides around our trail here most of the time in the powerband!! yeah the bike may be a bit big now but at least I won't have to buy a new one next year! besides when he sits on his it fit's him like my 450 fit's me!! I would love to post a few pics for all to see if some-one could point me in the right direction? I have 2 pics of mine in my gallerie but could not get another one to up-load? I'll try again in the meantime thanks in advance,Neil
Once he gits a little seat time aorund the house I'd take him to a track that has some MX instruction. Just learning proper body position and other techniques goes a long way in keeping him out of trouble when things get hairy. They're like a sponge and learn quick "have fun"!