The world's finest ball joints from the name you trust - Proforged. Laboratory tested and proven in the real world, our ball joints feature improved design over the competition for increased longevity and durability, even in the most demanding conditions. Proforged Ball Joints generally utilize forged SAE4140 steel for the ball stud and forged SAE1045 for the housings, a combination that yields incredible strength and toughness. Proforged ball joints are available for nearly every year, make, and model vehicle found on the road today.'