I've only had mild head shake so far, but roads around here suck. I was going out of a stop and decided to hit a wheelie, and what do you know, there was a pot hole as my front wheel was up. Scared the hell out me, the front wheel dropped and proceeded to go into a tank slapper. I ordered a scott's dampener from kneedraggers.com as soon as I got home. They are easy to install, they go into the nut on the clipons and the mounting goes into the hexbolt for the gas tank. $425 bucks and in stock.