i have american star tie rods with heim joints. thats the only place you will find heim joints on my atv.........
they are stainless steel and they build them any length you need. im sure a phone call could get you some stock threaded and plus 2inch or whatefer to match your ball joints.
however like i was saying heim joints on the tie rod is an upgrade but i wouldnt use them any where else unless i had to. just my two cents