Believe me, I get that the world does not revolve around the US. However, parts or things available in one country aren't available in others. Hell, dinner of my Canadian friend at the time were pissed that the newer Pontiac GTO (Monaro Import I Believe) wasn't available in Canada because of some really stupid reason.
I think for the US most people would not see a stinger as a vehicle to tow things, while in other countries they would. Here, people would just buy a cheap pickup truck (ute?) Instead. So why would Kia spend money to ship a bunch of tow harnesses to the US if they would never sell? Andy if it was shipped on demand it might take to long for our American collective 2-day delivery mindset to fathom.
I meant nothing negative; was just giving what I thought was the reason as to why I think they weren't available.