Ball joints are a common wear item on Jeep wranglers that can produce vibrations, steering wander or even clunking noises. When installing a lift kit on your Jeep Wrangler JK it s a great time to replace the weak factory ball joints with a heavy-duty joint that is designed to handle additional stresses of oversize tires. Rough Country's replacement ball joints are designed from the ground up to give you a stronger, longer lasting ball joint that is a direct factory replacement. Rough Country Jeep Wrangler ball joints are packed with features that you won t find in other inferior designs. At the heart of each Rough Country ball joint is a high-precision chromoly ball stud that is oil-quenched, tempered and has spiral grooves to ensure lubrication during intense use. These ball joints are fully greaseable and feature a Gmetal on metal" design to provide a longer life span compared to joints featuring plastic or polymer components.