I'm not a racer nor a stunter but the difference i noticed on both my bikes with the Scotts when under hard acceleration and the front wheel gets very light is significant. I've not had any problems with head shake since I installed them. Both the R6 & R1 have reputations of twitchy steering and incidents of head shake and the fact I can't really use my left hand to hold on may be a factor as well. If you are experiencing problems with head shake then a steering stabilizer may work for you. Suspension work will provide more advantages than a stabilizer by increasing your bike's over all handling.