I have an 05 and I love it. I bought it with a after market CDI box and from what I have read about stock 05's I think it made a huge difference, it runs like an animal. I do wish it had a 5 speed, but the 4 speed isn't a problem. I am running 14/50 gears and all I do is desert. I am able to out run my brothers 04 crf 450 on top speed, and still do nasty slow stuff.