Our Camburg upper arms are designed to address the limitations of stock upper arms when lifting your truck. By replacing the stock ball-joint with a larger 1.25 uni-ball bearing, we improve wheel travel and durability under extreme conditions. These arms also provide more caster and correct the camber curve for better alignment and improved driving characteristics. They are made with thicker 1.50" x.188" wall tubing for increased strength. Our arms are designed using CAD/CAM engineering software and manufactured in-house with precision CNC laser cutting, bending, and MIG welding. They are sandblasted and powder-coated for a durable finish. The arms come with polyurethane frame pivot bushings with grease-able zerk fittings and FK 1.25" PTFE-lined uniballs pre-installed. All necessary hardware is included for installation. It is important to note that these arms are specifically designed for use with our shocks and kits. Using them with longer shocks, shock spacers, or drop-down style lift kits can damage the arms and lead to uniball hardware failure. Please contact our sales department to confirm fitment if you have any questions.