UMI’s 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 4056 arm for all racing applications. Arm must be used with tall spindles when using standard height ball joints. 100% manufactured, tested and raced out of Philipsburg, PA – USA. Hardware kit, Part # 4003 - Upper a-arm hardware kit includes Grade 8 bolts, washers and nylock nuts. Kit includes everything needed to mount your new UMI Performance A-Arms to your vehicle Features and benefits: Relocated ball joint pad for increased caster and improved steering feel without excess shims. Laser cut ball joint mounting pad. 0.120” wall thickness 1.250” diameter DOM tubing. TIG welded for superior strength and clean looks. 4130 CrMo cross shafts, CNC machined & zinc plated. Polyurethane bump stops included. Travel limiting bolt compatible. Direct bolt-in compatible with factory or UMI lower a-arm and tall spindles. May also work in conjunction with other lower a-arms and/or spindles (contact UMI to discuss). Package includes recommended alignment specs and detailed installation instructions. Designed, tested, manufactured and raced in Philipsburg, PA-USA. Note: Upper a-arm P/N 4056-1 includes standard height ball joints and must be used with A-Body tall spindles. In most cases shims are not needed. Shims may still be required on some applications.
