My bike has about 700 miles and i alreayd have alot of play back there, I was wondering what this actually does and is it on all other bikes?? My dads bigdog has 35000 on it and its tight just like its bolted to the hub. Has anyone thought about making somthing to delete the rubber in the hub and make it solid?? thanks Also Any pics of the inside would be great...

05 America, cleared pipes,Gutted airbox, 150mains,bullet blinkers, billet mirrors,Iso-grips...