My son is riding really well on tis TTR 110. He is wanting more bike and better suspension. I was planning on a 65 in the near future. I was at the track this weekend talking to some dads. They have a good point. My son is 8 years old, 92 lbs and 55" tall. I don't think a 65 would do him much good. Maybe we should keep the 110 and ease him into an 85? I dont think he will have much problem with it. Am I nuts? Thanks for any input.