XR200R Flywheel Weight;

So I am breaking down the motor I got with my 1990 frame just to pass the time away and got to the flywheel. 


Wow, that is a heavy little sucker, I remember reading a post where someone took off ~ 14 oz's w/o any benefit and stated that the crank is way heavy, so the benefit from milling down the flywheel was negligible. 


I'll be curious of the weight of the crank, when I break it down to that level. 



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