You do not need to order this if you ordered the hitch. There is one included with the hitch. Only way you should need this is if you loose one or if you need one for a different size ball. Also, this did not look like it would work with a Kuryakyn brand hitch. It fits into the hitch OK but the hitch plate is shorter and will more than likely let the trailer coupler rub on your back fender.

Nice product and very strong hitch. Chrome receiver adds a bit more chrome to the bike