What is this mod for?

[MisterGDBusa]

Can somebody explain me what is this mod for?
Please!
I have this clutch sound and its driving me nuts.
2008-2012 HAYABUSA GENERATION II CLUTCH MOD INSTALLATION - YouTube

 

[BlueHaya]

Launch

 

[dadofthree]

Somebody say lunch

 

[Telboy2000]

On my 13' bike there is a bit of judder from the clutch if I pull away slowing from lights but no noise.....then again there could be but I can't hear it over the Yoshi's

 

[MisterGDBusa]

Mine is stock pipes and its quiet. I hear the engine internals.

 

[MisterGDBusa]

I need to open that plastich and clutch cover to check on the clutch bolts.