I have a 2023 Super 3, and it has almost 700 miles on it now. The BB definitely made a loud whine when it was new but it seems to be quieting down as miles are added on (either that or my new helmet filters out the frequency). I wonder why Morgan went this route, they could have just used the drive shaft setup from BMWs motorcycles. I know there is extra weight with that but it would have been much quieter....