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. We also adjust the caster and camber curve to correct geometry, resulting in improved driving characteristics and handling. Our arms are designed using CAD/CAM engineering software and manufactured in-house with precision. They feature thicker .156" wall round tubing, laser-cut and CNC-bent tubes, and MIG welding. The arms come with polyurethane frame pivot bushings with grease-able zerk fittings and FK 1.25" PTFE-lined uniballs pre-installed. They are finished with steel gray powder-coating and include all necessary hardware for installation. Please note that these arms are not compatible with vehicles equipped with electronic adaptive ride control suspension systems. They are designed for 1-3" of lift and may require trimming of plastic inner fenders to eliminate tire rubbing. Additionally, 20" OEM wheels & tires and 18" OEM wheels with larger tires than stock are not compatible with this suspension system.