The Kryptonite Upper & Lower Ball Joints 1420BJPACK is an excellent upgrade for the suspension on your Ram 2500/3500 4WD. These ball joints are designed explicitly for heavy-duty use and will tackle the toughest work that you can throw at them while delivering exceptional performance. Each Ball joint has a durable E-Coat finish to maintain performance integrity and resist corrosion. All ball joints come pre-greased with premium high-quality grease and are ready to install out of the box. Features: Made In The USA Serviceable Grease Port Direct Press In Replacement All Joints Come Pre-Greased Oversize Heavy-Duty Internals Heat Treated 4140 Chromoly Stud Improved Strength & Rigidity Over OEM WARRANTY INFO: Lifetime Note: OEM spec ball joints. These are Not suitable replacements if knurled ball joints have been installed.