I had a rattle in my exhaust system. Couldn't find it no matter what I did. Then I was out riding and the machine didn't want to go over 50 kph. Turned out the welds broke on one of the baffles inside the muffler and it was rattling against the spark arrester. If it turned a wee bit it plugged the exhaust and the bike stalled. Took it to the dealer and they installed a brand new exhaust system and the muffler itself looks I little more rugged. Just a heads up.