Overview

UMI Performance 12-Bolt Swap Adjustable Upper Control Arms

UMI Performance 12-bolt swap adjustable upper control arms are designed to bolt a 1964-72 GM A-body 10-bolt or 12-bolt rear-end into a 1978-88 GM G-body. These control arms are a must any time this swap is being completed. Using factory control arms will cause drastic rear-end bind and an incorrect driveline angle, which leads to traction loss, vibrations, and unsafe handling. UMI Performance 12-bolt swap adjustable upper control arms allow for easy on-car adjustability to set the correct pinion angle and make installation adjustments if needed. Adjustments are made using an aircraft-quality, 4140 chromoly, heat-treated adjuster and spherical bearing rod end. The rod end allows the rear-end free movement when high-handling, autocross, or road racing is a concern; it also works great as a drag racing item by eliminating rear-end bind. These upper control arms feature TIG-welded construction and 4140 chromoly tube adapters.

Additional features include:

* CNC-machined 6061 aluminum step bushings
* Durable powdercoated finish
* On-car adjustability using right and left hand threads
* Precision CNC-machining to ensure tolerances
* 3/4 in. hard chrome plated, PTFE/KEVLAR® self-lubricating race rod ends

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