Last Sunday came back along the m27 for about an hour at 70mph. on my Speed Twin 2019 (5000 miles). Bike started to get really noisy from the silencers. Got to a fuel station and got petrol and the bike sounded like the baffles had gone except the volume was the same from both exhausts so I figured something in the Cat had gone and continued home. The next day the bike was a little noisier than stock and today almost the same as stock. What happened on Sunday to make it so loud. Nothing is rattling anywhere.
