I'm going to be honest with you, I have been on the site a long time and have never seen a set go for sale used. Because once you install them, and have the adjustability they give you as well as the versatility to run larger tires, folks don't take them off to sell. But good luck in your search. I too run superatv forward arched a-arms.
PRCforum is the best Polaris forum community to discuss RZR 1000, Crew 900, PRC Ranger Club, XP 900, RZR XP 4 900, RZR 570, HD, 170, RZR-S, XP 900, RZR XP 4 900, ORV, side by side, SSW and off-road information.