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I have a 2006 FXST softail i get a death wobble at speeds above 120km i weigh 150lbs i have had other people the same weight ride it and they also get the wobble. I had a harley mechanic for 25 years look at it and he cant get it to do also had other friends ride it and again it wont do it. It seems like if your over 190lbs it does not wobble. The harley mechanic has checked the following and was going to check the rear suspension next.Everything seems to be in spec not sure what next step is any comments would be helpfull.
Head bearings
spokes
put new tires on
alignment
forks
bushings
Everything that needs to be checked for the wobble should include, but not be limited to:
Air Pressure
Rear Wheel Alignment 0.793mm In Between Side To Side
Tires Not Balanced
Rim / Tire Out Of Round
Steering Head Bearing Incorrectly Torque
Wheel Spacers
Wheel Bearing
Engine Mount
Transmission Mount
Equal Amount Of Fluid In Both Forks
Loose Axle Nut
Caliper Alignment
Neck Bearing Adjustment
Swing Arm Pivot
Shocks Rear Aligned Equally
Top Of Forks Not Extending More Than 10.66mm - 12.7mm And Be Equal
Steering Stem Nut
Swing Arm Bushings
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