2009 apex ltx 136 vibration 60 mph up

[blown apex]

i have a 2009 apex ltx 136 and it vibrates 60 and above
this has been going on for 2 years
i can feel it in my feet and handle bars
changed belt 3 times
since this vibration i took it to ---------- yamaha and they tried a bunch of stuff and suggested a few things
so i changed drivers/track to a ice attak /secondary jackshaft bearing/driveshaft bearing/all wheels/looked at all wheels for contact at lugs
ran tight track/loose track/changed both primary and secondary clutches with my other apex 121 /chain case all looked good when apart/
added 4th wheel kit/new dupont hyfax/pulled limiter up 2 holes
no changes still vibrats the same
(by the way i have 7 apexes and this one handles and runs the best of all them but i cant ride it vibrating like it does )
thanks for any help or ideas

 

[yamadoo]

Man I was betting on track but I see you changed that
Good luck not sure what to tell you

 

[sxr70001]

Maybe check the runout on your driveshaft and jackshaft. sounds like you have tried all the obvious things.

 

[72Gran]

Check the brake disc fit for wear on the jackshaft. My 08 was worn considerably and caused this type of vibration. The jackshaft needed to be replaced. I started greasing this fit with tacky grease to prevent wear, seemed to work. Sled had high mileage though 30+k

 

[sgauthier]

motor mount?