Finally got around to installing a new set of Kuryakyn Iso-grips on my VN900 custom. Wow, noticed a big reduction in buzzing at the higher RPMs at high speed. Matter of fact, I think the new grips even made the bike faster since now I find myself twisting the throttle a lot higher:-D now that much of the vibration has been reduced. Of course I'm kidding on the speed increase, but the driving pleasure of the VN900 at higher speeds has now been improved. Just wish I had taken the time to do the replacement earlier. So thumbs up on the Kuryakyn Iso-Grips.