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What is the high-pitched whining sound from the bike?

5841 Views 21 Replies 18 Participants Last post by  cory8020
I am just curious what the high-pitched sound is on these bikes. My CBR600RR did not have this. Sounds cool but just wondering what it is... Highly technical responses are okay ;)
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it is the noise from the timing gears, kind of like a gear driven water pump on a big American V8, but for the timing.
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