So is it the noise that bothers you? Here we refer to it as the "Yamaha tick" and it's considered perfectly normal (although annoying) on all Yamahas with hydraulic cam chain tensioners. Both my 2014 R1 and 2014 R6 had it new from the dealer. I'd hear it on startup and while idling at traffic lights. The only way to rid yourself of it is a manual cam chain tensioner that holds the same tension all the time.

I shipped my stock hydraulic CCT to Mad666, he claimed it works great when we met with him in Kraków this past November. It had about 7.000 km on it and worked perfectly fine in my bike, although it did have the tick. He asked why I replaced it, unfortunately I didn't have a good answer, other than I just wanted a Graves manual CCT (very nice units, by the way).

What I've noticed with the manual CCT is the noise is pretty much eliminated, but more importantly, the bottom end RPM range is more responsive. This is likely due to the cams and crank staying in better synch with each other since the cam chain has consistent pressure on it.

A.S., a question regarding this two year guarantee... Will you have the same fight and have to complain as much as you have just to get half off the price to get it changed again when it's making the noise a few weeks later? Does the guarantee in fact cover noises? Ask about this specifically, because if the dealer, and more importantly Yamaha, deem the part is functioning as it should, regardless of noise, the guarantee doesn't mean much to you. I suggest you ask what they'll do when the noise comes back.