i have a video to describe it, what is this, is it normal ?

 

Sounds like the CCT or the lifter..chain slap...very subtle possibly.

How many miles? Hard to tell with that video...does it get more intense along the Rev curve?

 

chain slap? even with the bike being stationary? and the bike has 23,xxx miles.
It somewhat gets worse with the rev curve as you can tell in the video 0:14

what is the difference between cct and the lifter? i thought cct was short for cctl hence lifter... ?

 

as in the Cam chain....They are indeed 2 parts...the #4 Tensioner itself is an automatic adjusting one and have been had problems. both parts have played a role in this ever occuring issue that many of these bikes are plagued with. Be it the tensioner not putting enough on the lifter #3 or the lifter being worn, etc... This is more than likely your issue. There is a fine solution in a sticky at the top of this forum. Very common at your mileage btw. There is no real harm at least this seems to be the general consensus..(obviously breaking the chain is very harmful.I Just mean the sound...)..however it is annoying,,and if there is an obvious issue it will get louder as time goes on. Either buy a new one or get a manual APE but either way it is not a 5 min. fix....do your homework.

 

I dont really feel like digging into that just yet as im not that experienced with wrenching on these types of bikes yet, but ill check it out if it gets louder with time. thanks alot for the clarification