Eco Stealth hitch compatibility with Kuat Sherpa bike rack

All 2" receiver hitch pin holes are the same standard size. If your Kuat rack is designed for a 2" receiver then its pin will fit.

My concern with using a Kuat bike rack on a Prius is that they can put the weight of bikes substantially further rearward than a hanging bike rack and cause stress on the Prius body. That said, a Kuat is an alternative for carrying unusual bikes that won't fit well or fit at all on a hanging rack.

I sure wouldn't add any extensions to a Kuat and carry three or four bikes. That would put the weight of the extra bikes far, far back and cause a lot of leverage stress on the Prius.