I have a 04 yz450 and after I smoked the stock rear sprocket and chain I decided to change the gearing. I went from 14/48 to a 15/45 setup. I do all desert riding and the front wheel stills lifts off in 4th. I was just wondering what gearing anybody else has been using in the desert. Also, anybody know what the 450 is capable of, with just sprocket changes - top speed?