Every four-bike hitch rack I’ve seen has been a receiver type, either 2” or 1.25”. You might find a rack for two or even three bikes that bolt into the hole for the ball but it would be unusual. Good luck. 

Stephen

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> On Aug 15, 2021, at 7:35 PM, Jeff Palmer <w.jeff.palmer@icloud.com> wrote:
> 
> Can anyone recommend a 4 bike carrier that works on a ball hitch?  I expect it might need to be secured to the hatch in some way?
> 
> Thanks
> Jeff