<strong>Ball Joints and Kingpins:</strong> Ball joints and kingpins are critical components to any steering and suspension system, as they are the pivot between the steering knuckles and the suspension of a vehicle. When ball joints go bad or kingpins wear, they can cause unwanted movement from the wheels and tires, transferring vibration to the chassis. Factory “sealed for life” ball joints are often already marginal with the biggest wheel and tire package offered from the factory. Adding even larger wheels and tires, as well as the increased weight that comes with them, can easily exceed factory ball joint design limits and increase wear, potentially leading to catastrophic failure. We recommend greaseable, heavy-duty ball joints, such as the Dynatrac (www.dynatrac.com) ProSteer ball joints seen here (left). In addition to being greaseable, these joints can be rebuilt without removing them from the vehicle.