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

Starting with 1.500” USA Made DOM steel tubing, these UMI Performance lower A-arms are built for serious track use on your 1970-1981 GM F-Body, like your Chevrolet Camaro or Pontiac Firebird. They're designed to be a direct bolt-in replacement, but they bring a whole new level of performance to your front suspension. The coilover-only design helps shed weight compared to setups that use a separate spring bucket, and the double shear coilover mount is ready for standard ½” rod end shocks, coming with spacers for popular models.

What really sets these apart is the attention to detail for track performance. The lower ball joint cup is moved forward to give you up to 4 degrees of extra caster potential, which significantly improves steering feel and straight-line stability. You'll also get improved camber curves and roll center height for better front-end grip. These arms come pre-loaded with premium Howe +3/4” tall ball joints, and they include a double shear sway bar mount with an end link that works with many factory and UMI sway bars. The Delrin bushings used throughout help ensure smooth suspension travel with less deflection.

UMI offers an optional hardware kit with high-grade mounting bolts, either ½” standard or 14mm metric depending on your car's year, and they even supply both sets of mounting sleeves to ensure a correct fit. For the ultimate handling package, UMI recommends pairing these with their P/N 2656-1 upper control arms, which can help you achieve up to 10 degrees of caster. These are manufactured and raced with pride in Philipsburg, PA, USA.