i once raced this cr500, it was funny as hell
i was riding slow (letting my bike warm up) when this dumb ass guy rides next to me, i was on my way to the hill, hes all nodding his head like he wants to race, i starting laughing, he yells come on man lets do it. i was like hold on i shift into 2nd gear nod back keep in miind we are cruising in 2nd gear about 1/2 throttle, i am still laughing and i say alrighty man on your move, he takes off i dumb the clutch, pull a good wheelie by the time i hit 3rd gear he was about 2 bikes back, i hit 4th another 2 bikes, and so on, i look back he is turning around i (being the smart ass i am) start waving at the guy and laughing even harder.
it was great i have never been beat by a dirtbike. i raced a build cr250 on the street and layed into him by about 6 or so bikes.
keep in mind mine's not stock but you get the point, mine still runs on gas by the way. so its pretty easy to build a banshee to whoop ass on a dirtbike.