I picked up a mint Ktm sx65 for my sons 7th birthday. I'm hoping to start him racing next year with it. But my sons bike he has before is a crf50r with a big bore, full pipe, full suspension, all kinds if motor goodies for more power, and alot of other stuff including a tall seat and tall bars. He's a big 7 year old(turns 7 in the 14th.) he is 4 foot 7 inches(yes u know BIG kid) and only weigs 72lbs so he's skinny. He runs the 50 way to hard. But I got the 65 for his b-day and gave it to him early cuz we went to a track with a kids track and big open fields and caped thus weekend. He learned the clutch in the fields. And he did GREAT but he got very good.. And on the track he rode the child's track(4-10 then there's a teen track11-16 then an adult track 17- whatever) he got very good on the kids track. Like he was clearing every jump and was begging for more. I asked the staff if he could try the teen track and the staff got all terms off the track (only 1 kid running it) and let my boy try it.. He was doing good the first 2 laps( mostly rolling the bigger doubles like 20ft-40ft biggest is a 50footer) but he nailed the tables(cleared the biggest table with ease and it's a 35 footer) but he's afraid of the powerband.. He said he just gets it past the initial hit and runs it in that gear only( he said he was in 3rd going WO. But I'm not too sure what I could do to help him hit the doubles and get alright with this bike.. My 5 year old asked to take the 65 for a ride and I let him(1st gear) he ended up wheelying into the caper..(went about 60feet in a big wheelie in 1st gear before he smashed into the camper. But after he did that my 7 year old wouldn't get back on it or ride it? He says he's scared if the powerband. But he was doing so well and Havin a blast till that happens. Should I sell it and get him a 4. Stroke? If so what race 4t for kids that small? I thought a crf50 but hell his was way past what you could do to it and still wasnt good enough but I thought a xr/ crf80 with KX or Ktm 65 forks/ rear shock and swinger and wheels for disc brakes.