
Well since no one answered your question, ill answer it:
I suggest a yamaha ttr125 l because its a awesome trail bike, easy to maintain and wont break on you know matter how much you beat on it
if thats to small try a yamaha wr 250f, great bike, but your goinna have to maintain it a bit more then the ttr 125l. the wr 250 will run you about 7500$ where as the ttr 125l is around 4000$
Take your son or daughter down to a yamaha dealer ship and let em sit on a bike , so you can see how he fits it
I hoped i helped :/





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