Here is a pick of my primary sheave that exploded this weekend 1700. mi still had stock belt on it. It was running great heard a big pop then belt shreaded don’t know what happen was doing about 50 mph on flat ground when it happened. I don’t know if it had anything to do with it but I got hit by a can am and had to replace my bent trailing arm 15 mi. after that my primary exploded. NOT A GOOD WEEKEND!