So RV is going to be riding a 450 outdoors this year? If thats true then I don't think he will do as good as he did on a 250F, he is really small for a big bike and I have seen him ride one and he looks better on the 250F. that's what i was thinking. but man that kid is so fast, his lap times on the 250f are faster than the 450s sometime. he could just race his 250F in the 450 class.