I just biult a 2004 501 and was wanting to know what front sprocket the guys with the 480 and 501s are running on the sand. We went to the coast and I started out with the 14 tooth and could not launch in 2nd gear. I thought I was going to be able to but I couldnt. Im also running 22x11x8 10 blade ultra light haulers. Im going to try the 13 tooth this weekend.