Not sure about the 500i, but I bought a 450i and ordered thru the dealer a midmount universal kit by Quadboss. The plow and mount are very well made but the universal mount attachment was junk. I ended up designing and building my own as there was nothing else out there. The other bad thing was the universal mount kit lowered the clearance by more than 2 inches, but now I have it dropped less than 1/2". The 500i has been around longer so something might be available, but....won't the atv plow be a bit small for the SxS?