Posted 4/8/2017 09:34 (#5952101 - in reply to #5952078) Subject: RE: What are the ball dimensions of a Category III and IV hitches?
Pierce county WI
If this helps, the od of the pins for cat 3 are 1.5", cat 4 are 2". My 8960 is in a customer's field, but I will be heading that way in a little while. But I just measured the pins from the quick hitch from it, compared to my 8200. I thought that might give you the ratio