Hitch installation hardware can be used only one time and that is probably why your old hardware was not returned to you. We do offer replacement hitch hardware kit # RHK for each hitch we sell and all of the aftermarket hitches for the 2017 Kia Sportage are shown on the linked page.
You'll note that we have both 1-1/4-inch (Class II) and 2-inch (Class III) hitches for the car and you'll want to confirm which type you have so you can select the appropriate hardware kit. Your old hitch... view full answer...