This is true in my case I know. In fact, it was taken back 3 times last year. I stated the whole story on the first page of this thread where I also stated that I now ride it like I stole it. And guess what? Slowly but surely my knock is getting louder and louder. Maybe here soon we shall se exactly what is causing it. :twisted: :twisted:That's a load of bull. I think everyone on here has had their bike to the dealer wondering about the knocking and to quote all of them "it's normal" It may be normal but it is embarassing to ride a bike that has that noisy a motor.