Camburg Ford F-150 2WD/4WD 09-20 1.25in Performance Uniball Upper Arms (w/ covers)Our updated design features a billet aluminum cover for the uniball, preventing dirt and contaminants from entering. The cap is press fit with an O ring seal. Our Camburg upper arms replace stock ball joints with a larger 1. 25 uni ball bearing, increasing wheel travel and durability. We optimize geometry for correct alignment and improved handling using CAD CAM software and laser scanning. Manufactured in house, our arms are laser cut, bent, MIG