UMI Performance 64-72 GM A-Body Front Upper A-arms Adjustable

Starting with the 0.120-inch wall thickness 1.250-inch diameter DOM tubing, these UMI Performance upper A-arms are built for serious performance driving. They're designed to handle the demands of Pro-Touring, road racing, auto-x, and spirited street driving. The race-quality rod ends allow for shim-free adjustment of camber and caster, giving you precise control over your alignment. This is crucial for dialing in your suspension for optimal handling and tire wear.

A key feature is the relocated ball joint pad. This design choice increases caster, which significantly improves straight-line stability and the overall feel of your steering. The distance between the cross shaft and the ball joint is also shortened, further contributing to these improved steering characteristics. These arms are TIG welded for exceptional strength and a clean appearance, and they include polyurethane bump stops and a travel-limiting bolt. They are designed as a direct bolt-in for factory or UMI lower A-arms and tall spindles, and they come with recommended alignment specs and detailed installation instructions. Remember, these arms include standard height ball joints and must be used with A-Body tall spindles for proper fitment.

This set is manufactured and tested in Philipsburg, PA, USA, and is a solid option for anyone looking to significantly upgrade the front suspension geometry on their 1964-1972 GM A-Body vehicle, including popular models like the Chevrolet Chevelle, Pontiac GTO, and Buick Skylark. A hardware kit, Part # 4003, is available separately and includes Grade 8 bolts, washers, and nylock nuts for a complete installation.