good beginner bike for my son

ya todd made another good point why i rode a pw80 is because when i was 7 my parents said i had to save 1/2 the money doing chores or helping my dad at work for a bike and my dad paid the other so a pw80 was what i could afford at the time but ya a kx60 or an rm65 i would have loved because those bikes have even better suspention and go even faster and are great at the tracks.  
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Autismspeaks.org   check it out
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life in the fast rut!!!!
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my rides- 2008 yz250f fully modified, use to be j-laws bike
        &
IT400 1979 yamaha!!!
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Home: SO CAL

I wouldn't to a 60/65 unless your son is very agressive. i like the pw80 idea.  
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Lancaster, PA
2007 CRF250R
4 Stroke 4 Life!

that would be good. i got a 80 quad at about that age and he would do well. i mean my cuz is his age and has a ktm 50 senior. which is more bike and does great on it.  

if you dont worry about the label i would get him a thumpster thats what i learnt on and now im riding a rm125 but if a label matters i would give him a little ktm  

ok there is a big difference in price i am pretty sure from a ktm to a pw yamaha. OK i HAVE A TRAINER FOR MOTOCROSS and he has a son that rides around great on a ktm 50 with an FMF gold sieres pipe and he is only 4 so if you get him a ktm get him something bigger than a 50 i would recommend.  
--------------------
Autismspeaks.org   check it out
--------------------
life in the fast rut!!!!
--------------------
my rides- 2008 yz250f fully modified, use to be j-laws bike
        &
IT400 1979 yamaha!!!
--------------------
Home: SO CAL

I am buying my boy a new bike also. He is about the same age, getting ready to be 7. He isnt big enough for a 65 yet,already took him out and done a "test fit". He is getting a xr50 maybe a crf50. He isnt real tall for his age either. I am figuring the 50 will do him for a year or 2 then move him up.  

my first bike was a ttr 125 and it was a great begginer bike