Bigger front sprocket

[darrsi]

[quote author=daviee link=topic=23930.msg277400#msg277400 date=1522259363]
have you tried balancing the carbs it help smooth it out i get very little at 70 mph just a thought ,,

Yes I did them last night actually, it's defo a mechanical prob on these machines, a proper tingling through my feet at 6250 rpm
[/quote]


Just take into consideration that the rear wheel alignment might cause mild knocking at speed if it ain't quite right.
Even spinning the rear wheel in reverse on the centre stand can show this up, and you can also hear if it's not true.
Don't totally rely on the swingarm markings.