🔧 Upgrade Your Ride with Confidence! Designed specifically for Dana 30 & Dana 44 axles, ensuring seamless installation. Backed by Rough Country's Limited Lifetime Replacement Warranty. Polyurethane dust boots protect against dirt and debris, extending lifespan. Experience a break-in period that leads to tight and responsive steering. Engineered with Chromoly Ball Studs for superior strength. Chromoly construction Set of 4 ball joints Lifetime warranty The Rough Country Heavy Duty Replacement Ball Joints for Jeep TJ/XJ/YJ/ZJ (Model 10642) are a robust set of 4 ball joints designed for optimal performance and durability. Featuring Chromoly ball studs and polyurethane dust boots, these joints are built to withstand the rigors of off-road adventures while ensuring a smooth driving experience. With a limited lifetime warranty, you can trust in their quality and reliability.