UMI's double adjustable lower control arms feature Roto-Joint technology for a bind-free performance and quiet ride quality. These control arms can be adjusted longer or shorter to move the rear end back or forward, allowing for larger tires in the fender wells. They are recommended for aftermarket rear end installs to center the rear end and prevent tire rubbing.
Constructed from 1-1/2” drawn over mandrel tubing with TIG welded chrome moly threaded tube adapters, these control arms offer strength and performance. They are designed with left and right hand threads for easy on-car adjustments. The control arms also have provisions for adding a stock or aftermarket sway bar.
The Roto-Joints on both sides of the control arms allow for maximum performance and suspension travel. They provide 28 degrees of total unrestricted movement, improving handling and articulation. The delrin race lining the spherical ball absorbs shock and road noise for a quiet and smooth operation.
UMI's Roto-Joint technology allows for 28 degrees of total rotation and unrestricted movement within the suspension. The hard chrome plated spherical ball rotates in a delrin race, providing wear resistance and improved traction. The Roto-Joint is adjustable and 100% rebuildable.
The spanner wrench is used for adjusting and disassembling Roto-Joints in UMI Performance products. It can tighten the adjusting ring to apply more pressure to the delrin inside the Roto-Joint, and can also be used for disassembly, cleaning, inspection, and rebuilding.
