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Hi Greg! Welcome!
My guess, and it is purely a guess is that it's some of the plastics rattling. That 8-9k range is where it hits resonance - if you notice if you hold it there your ears will start ringing too.... I think that there's probably something loose in the upper fairing that just starts to vibrate when the engine hits that frequency.... but again, that's just a guess...
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Progrip tank pad, blue rim stripes, blue Pazzos, Roaring Toyz lowering kit, Puig DB in dark smoke, Cortech sport tail, super mini tank, and saddlebags, OES swingarm spools and Intuitive frame sliders
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