well i have a 04 crf 250. i am almost 16. i got it and was stepin up from an rm 85. it works awsome. i love it. my dad has a 04 crf 450 and he said it was nt as fun to ride as my 250 was, so he went out and got another crf 250. the only thing thats been bad on mine was the valves. we replaced em around 10- 15 rides ago and its been starting like brand new. i love it!