Keller - POLARIS RZR XP 900 BALL JOINTKellers Two Piece Ball Joints Are Better OEM ball joints rely on a snap ring to hold them, and that snap ring can easily fail when youre wheelin' hard. Thats why Keller came up with a better, two piece design that eliminates the need for a snap ring. The rest of the ball joint is upgraded to chromoly steel too. So put a set of Polaris RZR XP 900 Keller Ball Joints on your rig, and start sending it without blowing up your ball joints. Long Lasting and