I just bought a new 07 Kingpin and toured it out.. I have a 4x4 trailer with a cartop carrier mounted on it that I want to pull behind my Kingpin but can't find a hitch to fit it..  Hitch Doc makes hitches to fit Victory bikes but not my Kingpin.. Any suggestions or ideas would be appreciated.. L8tr, Frenchie.  

I found this when I was looking for a hitch for my kingpin recently. I have not purchased this yet but it is the only hitch I found so far that is labeled specifically for the kingpin.

http://www.mchitch.com/MCHITCH_Victory_Trailer_Hitch.htm

Hope this helps.