I registered my 2014 RZR here in Pender County.
You need the MVR form filled out, MCO - acts like a title, and state safety inspection, and I think maybe a bill of sale but I don't remember on that.
MCO is fairly easy to get at least through Polaris. If you at least have a bill of sale, you contact your local dealer and tell them you need the MCO reassigned to your name/address. They enter the information into their system, then from there you have to call Polaris Corporate and tell them you need a duplicate MCO. Now that is got your address in their system it will come to you. You take that along with the MVR form posted previously, and you can fill that out yourself as it says dealer, shop or 'Person involved in modifying vehicles', so you just attest that it has all needed safety items and that you are a 'Person involved in modification of vehicles' and sign that form to bring with you.