I asked a Yamaha mechanic the same question and he told me it is an oil slinger that helps cool the stator?View attachment 125526 what the point is of that little wire thingy that is in the end of the crank bolt on the mag side of my apex. Looks like the 06-10 sleds have it and the 11+ do not. Working on a supercharger install and if it serves no purpose I'll skip messing with it.
Thanks.