Max Clearance Front Forward Upper & Lower Control Arms for Polaris Ranger 900 XP - Black Take your Ranger 900 and Pump it Up! Highlifters Max clearance front forward arched upper and lower control arms for the Polaris Ranger 900 XP give your customer the clearance needed to run up to 30in. tires. Kit moves the front hubs forward 1.5 inches for clearance without lifting the ride or increasing the center of gravity. Control arms are crafted from heavy duty 1-1/16in. steel tubing and powder coated in stock Polaris colors.