Yea normal for a v4 Honda some have a more pronounced whine than others and as the bikes so quite you may also pick-up shaft/bevel gear noise in certain gears and revs,try a set of ear plugs, i use them all the time as i find it makes the ride sweeter for me, and i use to cover silly mileage and ear plugs stop any long term wind damage...but ear plugs can be a bit weird at first, but they do stop you hearing all those small creaks/rattles etc, but you can still hear the tom tom or music etc and you are not isolated from the real world they just cut the wind and bike niggly noises..all a state of mind, anyway ride safe Garry