I have no first hand experience with theses, but I remember talking to some of the Team Green desert racing mechanics/riders, and they say the shorter dog bones improve the turning of the kx500, and make it easier to ride in technical sections. As far as bucking over rough terrain, I was describing another benefit I thought about once I was thinking about how they would affect the geometry of the suspension. There is no need to change the rear spring as a result of the shorter dogbones, but of course it would be a good time to grease and/or replace all of your bearings and adjust your rear sag. I would think that lowering the forks in the triple clamps will help offset any negative effects the shorter dogbones would have on high speed stability. Also, I want to mention that all of these Team Green KX500s had offset triple clamps. Mine came with a BRP upper and stock lower. It was amazing how many parts they kept stock if they could.