UMI Performance 91-96 Impala SS Adjustable Extended Length Upper Control Arms - Roto-Joints

The Roto-Joints in these UMI Performance upper control arms are lined with a greaseable Delrin race, allowing for a full 28 degrees of unrestricted movement. This design is a significant improvement over the stock rubber bushings, letting your suspension articulate freely without binding. This means you get more precise handling, especially during aggressive driving like auto-cross or road racing, while still maintaining a comfortable ride on the street. The Delrin race also helps absorb road noise and shock, keeping things quiet and smooth.

Adjusting your pinion angle is straightforward with these control arms, thanks to their on-car adjustability. You can easily lengthen or shorten the arm by loosening two jam nuts and turning the chromoly adjuster. Getting the pinion angle just right is key to reducing wheel hop, increasing traction, and improving your 60-foot times at the track. The mounting plates are CNC machined from 0.250-inch thick mild steel, and the threaded tube adapters are made from 4140 chromoly, all finished with a durable powder coat.

These control arms come fully assembled and ready to install using your vehicle's original hardware. They are a solid option for anyone looking to fine-tune their suspension for better performance and a more responsive feel.