Product review (5 stars): Suspensions springs.
My washer had started constantly banging and stayed out of balance all the time. No matter what I did it seemed like it was an  every wash Event.  After watching a few whirlpool videos I figured based on their suggestion that the suspension springs and the centering springs were the culprit. I ordered these and replaced it and also replaced the suspension centering springs. Additionally the original manufacture only had two of the small centering springs installed but had places for two others. Apparently they were not needed but since I had the two new ones, I used them anyway and now my unit actually has four of the small Springs. Regardless of the Issue it seems to have corrected it and runs perfectly now