I'm new here. I have a 2013 bighorn 400. I have owned it for about 3 yrs and I have had the exhaust pipe break in the same spot 2 twice now. It breaks about 2 to 3 inches off of the head flange where it constantly glows red when running. I called Bennche and the first person I talked to said it seams to be common for them to break about every 10 to 12 months on the older ones. They didn't know why. They were going to have someone call me back which never happened. I called again and that person was unhelpful. Has anyone else had this problem? Possible that the muffler packing be clogged causing this issue? Spark arrest or is clean. Any ideas? Will be cxalling Bennche again tomorrow.