Our arms maximize ground clearance by strategically arching the lower control arms while following the angle of the axle for maximum clearance, axle protection, and visual appeal. Don t be fooled with too much arch that puts your axles into greater risk of damage. Our precision manufacturing process ensures each control arm installs exactly like the factory arm. Depending on the model, most kits will have the High Lifter logo precision cut into the bracing. Installation is made easy with our step by step and multi-image instructions. During installation, you can use stock bushings and ball joints for easy installation. Even better, High Lifter will install your ball joints before shipping. (See our control arms with preinstalled ball joints.) Always check for bearings, bushings, ball joints, and brake wear before installation and replace if needed. We always recommend checthese parts before you start your installation to save time and get back on the trail sooner. Features: 25% larger than average stock arms – Crafted from 1 DOM steel Up to 2.5x the wall thickness of an average stock arms – .188 wall thickness Grease fittings included for most models Added ground clearance featuring bends that maximize clearance and axle protection Easy to install and maintain Limited Lifetime Warranty Tire Fitment: Polaris Ranger 900 XP – Up to 28″ Polaris Ranger 900 XP Crew -Up to 28″ Tire Fitment with Lift Kit: Polaris Ranger 900 XP – Up to 30″ Polaris Ranger 900 XP Crew – Up to 30″ Our tire fitment guide is a general fitment and is in no way guaranteed. Tires and lifts vary by manufacture and tire fitment can be affected by other modifications such as, but not limited to, wheel offset, actual tire diameter and actual tire width. Always verify your brand of tires, lift, and other modifications prior to maa buying decision.