Going to be playing around and fabricating with the aftermarket sissy bar with the shock absorbers. Looking for feedback from members that have some long time experience with these things. They don't cost a whole lot coming out of China and would like to know how long they last ? Will they hold up for riders that weigh 200 plus ? , they only come in a small size for shorter riders, is this because they don't want adults on these bars ? Any long term feedback with the overall quality would greatly be appreciated.