UMI’s 3056-3  arms are the ultimate in performance and are race proven on the UMI Green  Machine. These adjustable upper a-arms are designed to excel in Pro-Touring,  road race, auto-x and hot street corner carving. The race quality rod ends  provide shim-free camber and caster adjustment along with ultimate smooth  travel. This arm features a relocated ball joint pad to increase caster and  improve stability and steering feel as well as a shortened cross shaft to ball  joint distance. We recommend the 3056 arm for all racing applications. Arm includes 1” taller low friction ball joints for improved camber curve. 100%  manufactured, tested and raced out of Philipsburg, PA – USA.