my girlfriend bought a 2009 rzr-s a few months ago. we have it out a few times and what a blast. it is used primarily for following around my sand jeep in the glamis dunes. truth is, in the tight dunes, these things can run the wheels off my 500 hp, stretched, leaf spring flat fender!! we have had no problems with the rzr, but did hear the other side by side guys talking about the drive belts failing and we should carry a spare. my question is......what is the best replacement belt for quality and price. can any one offer some advice? brands and part numbers and where to purchase. maybe the stock belts?? i don't know anything about these things. thanks for any advice. mickey