I raced a couple bombardier ds650's and they beat me pretty easy. we were racing on sand. i have the big three on my quad(gytr full exhaust, quadworks, and gytr intake). he claimed he only had a smaller sprocket on the front and was using 14 paddle haulers to get that much out of it. i am running 10 paddle haulers. his were like 24 or 26, mine are 22 * 11 * 8. so is he full of crap or do the ds650's do that well stock. the sprockets on mine are 13/38.