UMI Performance 4019 - 1964-1967 GM A-Body Adjustable Upper Control Arms "Ultimate Arms"

Adjustability is essential when tuning your street car's suspension. Our Ultimate Arms offer on-car adjustability for the rear of your GM vehicle. Made from high-quality materials like aircraft quality 4140 chrome moly steel, these arms are designed to withstand tough conditions. The CNC machined 0.250" mild steel mounting points, 4140 chrome moly tube adaptors, and 4140 chrome moly heat-treated adjusters ensure durability and strength.

The on-car adjustability feature allows for easy pinion angle adjustments, whether in the garage or at the track. Simply loosen two jam nuts and turn the adjuster with the control arms on the car to adjust the arm length. These adjustments are crucial for improving traction and reducing wheel hop, especially for track performance. The QA1 Teflon lined spherical rod end design ensures smooth operation without binding.

Overall, our Ultimate Arms are a reliable and high-performance upgrade for both track and auto cross driven cars. with durability and precision at the forefront of our design.