UMI Performance 203337-R Rear Lower Control Arms & Adjustable Panhard Bar Kit with Roto-Joints Red

The UMI Performance 203337-R is a complete rear lower control arm and on-car adjustable panhard bar kit engineered for street performance and enthusiast driving. Built from DOM mild steel tubing and fully TIG-welded, this kit delivers a substantial upgrade over factory rubber bushings with a hybrid bushing approach — Energy Suspension greaseable polyurethane bushings on the chassis end and UMI's proprietary spherical Roto-Joints on the rear axle end. The result is a setup that dramatically reduces rear-end bind and wheel hop while preserving daily-driver ride quality.

UMI Roto-Joint Technology:

The Roto-Joint is UMI's signature rotational pivot joint, allowing 28 degrees of total unrestricted movement throughout the suspension travel. Unlike standard rod ends, the Roto-Joint combines the precision articulation of a spherical bearing with the street-friendly compliance of a softer bushing. The joint features a 4140 chromoly, hard chrome-plated spherical ball rotating inside a CNC-machined Delrin race. Delrin is selected for its exceptional wear resistance, high tensile strength, and dimensional stability. The housing is constructed from 4140 chromoly threads and a CNC-machined bushing holder, all TIG-welded for maximum strength. Critically, the Roto-Joint is both adjustable and fully rebuildable — as the Delrin race wears, the adjuster ring can be tightened to restore tension, and the race itself can be replaced when needed.

Adjustable Panhard Bar:

The included on-car adjustable panhard bar is essential for properly centering the rear axle after vehicle lowering and for accommodating larger tire sizes. The CNC-machined double adjuster features left and right-hand threads, allowing quick length changes by simply loosening two jam nuts — no removal required.

Key Features:

• DOM mild steel tubing construction, fully TIG-welded
• Spherical Roto-Joints installed — adjustable and 100% rebuildable
• Energy Suspension greaseable polyurethane bushings on chassis end
• 4140 chromoly, heat-treated on-car adjuster
• CNC-machined double adjuster with left and right-hand threads
• On-car adjustable panhard bar — no removal needed to adjust
• Uses OEM hardware — no drilling or modifications required
• Durable red powder coat finish
• Shipped fully assembled and ready to install
• Includes spanner wrench for Roto-Joint adjustment and servicing
• All bushing ends and Roto-Joints are greaseable for low maintenance

This kit ships complete and fully assembled. The included spanner wrench allows for field adjustment and disassembly of the Roto-Joints for cleaning, inspection, and rebuilding over the life of the components. An excellent upgrade for any street performance or drag strip application.