I'm thinking of moving my son up from his crf 50. He just turned 9 and wants to start racing. He is a little short in the legs and I think seat height may come into issue. I found a good deal on a KX 60 and thought maybe since it is about 2 inches shorter than a 65 it may work a little better for him. I know the 65 will have more power and I have a good deal on that as well. He's a pretty good rider and picked up riding his 50 quick. Either way, are there still kids out there racing the 60's with the 65's. Any help on this would be great.