My bike I've noticed is ultra smooth in the RPM's until 4000-5500ish. Once I get passed 6000RPM's it's all smooth again. Is this normal or should I be a little concerned. I personally don't think much of it but it just sounds like it is struggling, knowing that the powerband is much higher.

I'll see if I can mount a camera on the bike and post a video as to what I mean

 

thats pretty normal, my fairings will start buzzing in that rpm range also, then it goes away at higher rpms.

 

yeah, it wasn't what I thought it was.. My head just playing with me. I just need to get the windscreen down and I'll get rid of the most annoying buzz on my bike