UMI Performance 70-81 GM F-Body Lower A-Arms Tall Ball Joints Race Version

Starting with the 1.500-inch USA-made DOM steel tubing construction, these UMI Performance lower A-arms are built for serious performance on your 1970-1981 GM F-Body, like your Chevrolet Camaro or Pontiac Firebird. They're designed to be a direct bolt-in upgrade, but they bring a whole lot more to the table than just a simple replacement. The race version specifically moves the lower ball joint forward to give you up to 4 degrees of additional caster, which really helps with steering feel and straight-line stability. Plus, the coilover-only design sheds weight compared to traditional spring bucket setups.

What really sets these apart is the attention to detail for track use. The removable lower mounting system means you can change springs or shocks right at the track without having to separate the ball joints, saving you valuable time. They come pre-loaded with premium Howe +3/4-inch tall ball joints, and the double shear coilover mount is ready for standard 1/2-inch rod end shocks, including spacers for popular models. You also get a double shear sway bar mount with an end link that works with UMI's own sway bars and many factory ones. Inside, Delrin bushings are used to keep suspension travel smooth and reduce unwanted deflection, contributing to an improved camber curve and roll center height for incredible front-end grip.

For the ultimate handling package on your F-Body, UMI recommends pairing these lower A-arms with their P/N 2656-1 upper A-arms, which can help you achieve up to 10 degrees of caster. UMI offers an optional new hardware kit, with options for both 1/2-inch standard and 14mm metric mounting hardware, depending on your car's year. These arms are supplied with sleeves to fit either size, so you can confirm your current hardware before ordering. These are manufactured and raced with pride in Philipsburg, PA, USA.