More about Roto-Joint Technology….. UMI's Roto-Joint, short for Rotational Joint, allows 28 degrees of total rotation and unrestricted movement throughout the vehicles suspension. The Roto-Joint is designed to work like a spherical rod end while maintaining streetable qualities of a softer bushing. The Roto-Joint is designed to articulate and prevent suspension bind, and since the installed delrin race does not deflect like softer bushings, there is an improvement in traction and a significant reduction in wheel hop. The construction of the Roto-Joint features a 4140 chromoly, hard chrome plated spherical ball which rotates in a delrin race. The 4140 chromoly material and hard chrome plating are designed for extensive wear resistance against hard driving and accumulated miles. The spherical ball rotates in the CNC machined delrin bushing, which is contoured for the spherical ball to allow unrestricted movement as the ball rotates. Delrin is the bushing material of choice due to its high resistance against wear, great tensile strength, and ability to maintain its physical properties. The housing of the Roto-Joint features 4140 chromoly threads, and a CNC machined bushing holder TIG welded together for the utmost in strength and durability. The UMI Roto-Joint is adjustable and 100% rebuildable. This means as the delrin race wears the adjuster ring can be tightened using the optional spanner wrench to apply tension to the ball. If the delrin race would ever wear completely it can be replaced easily.
This kit includes rear lower control arms and an on-car adjustable panhard bar. The control arms have polyurethane bushings on one end and UMI's spherical Roto-Joint on the other. This setup is designed for street performance enthusiasts, with the polyurethane bushings absorbing road noise and shock. The Roto-Joint allows for 28 degrees of total movement, enhancing handling and eliminating rear-end bind. The panhard bar is essential for centering the rear end after lowering the vehicle and accommodating larger tires. It features a CNC-machined double adjuster with left and right-hand threads for easy adjustments without removing the bar. This combination of Roto-Joint and polyurethane bushings improves performance while maintaining ride quality. The kit is made of DOM mild steel tubing, fully TIG welded, and comes fully assembled for easy installation. It utilizes OEM hardware and has a durable powder coat finish. The Roto-Joint technology allows for unrestricted movement, improving traction and reducing wheel hop. The spherical ball rotates in a Delrin race, providing wear resistance and durability. The Roto-Joint is both adjustable and rebuildable, with a spanner wrench available for tightening the adjuster ring or disassembling the joint for maintenance. It is a high-quality addition to any street or drag application.
Spanner Wrench- This spanner wrench is used for adjusting and disassemble of Roto-Joints used in all UMI Performance products. Over time if the delrin race inside the Roto-Joint would wear the spanner wrench is used to tighten the adjusting ring applying more pressure to the delrin inside. The spanner wrench is also used to disassemble the Roto-Joint for cleaning, inspection and rebuilding.
The UMI Rear End Kit is a direct bolt-on upgrade that improves traction, handling, and overall suspension performance. Ideal for street or track use, it replaces weak factory components with strong, durable tubular parts for lasting results
UMI Performance 82-02 F-Body Lower Control Arms & Panhard Bar Kit- w/ Roto-Joints
UMI Rear End Kit enhances traction, handling, and suspension performance.
4140 chrome moly, heat treated on-car adjuster
High Quality greaseable polyurethane bushings
Shipped fully assembled and ready to install
Brilliant and durable powder coat finish
Constructed of DOM mild steel tubing
Spherical Roto-Joints installed
Fully TIG welded kit
UMI- Rear End Kit
Uses OEM hardware
Control Arm Kit
