Strange oscillating vibration

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V-twin

Pack Dog
Joined
Jun 18, 2014
Messages
177
Reaction score
1
Location
Klerksdorp
Bike
KTM 990 Adventure
Hi Guys,

So this weekend I realized I have a very strange vibration on my bike whenever I go above 140kph and it gets worse the faster I go. At first I though it was the rough road but I was on the R21 and that's quite a smooth surface. What makes this vibration very strange is that it oscillates from the front to the rear of the bike. I can feel it in the steering and then it stops but then I can feel it shifts to the back by feeling it on the foot pegs. This vibration consistently shifts from back to front.  I checked my rims for any smileys but could see or feel any(sometimes its invisible but I can feel them by sliding my hand along the rim.)
I think it could possibly be my rear wheel that is not aligned but then again I would have felt the vibration long ago as I fiddled with the wheel a while back. Anyone know what it could be?
 

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