Break the chain

"And if, you don't love me nowYou will never love me againI can still hear you sayingYou would never break the chain (Never break the chain)"

 If you have read the story with the same title on my VFR750 RC24 blog  then you are walking into a familiar yet fairly useful tail.
The CBR400RR NC29 normally runs a 525 chain, but race bike. A 520 chain was needed as there is no way I am running a heavier chain than the VFR750.
Now fairly well versed in this game I loaded up ebay and JT sprockets who have a great website which will show you every machine that a sprocket will fit. It was simple then to find the sprocket for my CBR then compare all the other bikes said sprocket would fit.

 520 chain 112 links long 
JTF565 front in either 15 tooth (standard) or 14 (faster acceleration)
JTA1303 is an aluminium 5520 pitch rear with the same stud size and spacing, designed to fit an R6. I went for 42 tooth. There is the option to go smaller for tracks like Donny where I would need more top end but lets see how this goes first first.

Easy as that! Now just to slap it on, take some photographs and share them with you a bit later when I actually get to do any of this.

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