【YZF-R1M(2015)】 Chain and front and rear sprockets replacement.【Japanese BONSAI motorcycle】

I ran 17,000 kilometers from the purchase, so I replaced the chain and front and rear sprockets.
We do not convert the number or 520, and replace it with an external product with the genuine settings.
In Japan, a motorcycle that is beautifully decorated and does not drive is called "BONSAI".
♪Music zukisuzuki BGM
zukisuzukibgm.com/terms/
Opening ：Conservative
BGM：Old-New
My English may be wrong.
Translated by Google.