I have dumped my XTR in rivers a few times...
It's as water proof as any other bike...
I have filled the motor / pipe with water..
motor wouldn't turn over had to remove the plug
& pump it out.. drain the air box
Never had a issue with the electrics after a drowing...
The trick is ..If yer going to put it down in deep water
try to hit the kill switch before it goes under.. then it's
less lightly to suck water into the motor..

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Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...