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I had good luck with the stock bushings, altering compression to tune out vibrations- my problem was hands going numb ( and i already have a history of carpal tunnel problems). A few tries and the bars stopped vibrating at a frequency that affected me. Have you tried adjusting your bushings first? ...and turns out the stock grips work better for me than the dozen aftermarket grips i tried. Mike
Besides a poor 2-piece design, the stock rubber bushings shrink with age to contribute to handlebar slop.
My understanding is that solid bushings are only needed for the more extreme ape hangers. Poly bushings are best for most other applications.
Poly bushings have worked well for my heavier than stock bars with only a slight increase in vibration at about 2200 RPM. The poly is durable too, after more than 5 years my bars still have no play.
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