Keller - POLARIS Ranger XP 570 BALL JOINTTwo Piece Ball Joints Are a Game Changer Todd Keller built these two piece ball joints to eliminate the need for a snap ring and to bolster strength throughout. With Polaris Ranger XP 570 Keller Ball Joints, its virtually impossible to pull out a ball joint on a bad hit. And thanks to a tougher stud and threaded housing, you can enjoy more rides without breaking ball joints. Long Lasting Durability Your Ranger XP 570 puts in plenty of hard work, so