UMI Performance 1061-R Adjustable Lower Control Arms with Roto-Joints

The UMI Performance 1061-R adjustable lower control arms are engineered for street performance enthusiasts seeking precision handling and improved suspension geometry. These control arms feature UMI's innovative Roto-Joint technology combined with polyurethane bushings for a perfect balance of performance and street comfort.

Key Features:

• On-car adjustable design allows fine-tuning of rear axle position without removal
• Spherical Roto-Joints provide 28 degrees of unrestricted movement for bind-free operation
• Constructed from 1.250" x 0.120" DOM mild steel tubing for exceptional strength
• TIG welded 4140 chromoly tube adapters ensure maximum durability
• Chromoly heat-treated adjuster enables precise length adjustment
• Polyurethane bushings on chassis end reduce road noise and vibration transfer
• All bushings and Roto-Joints are greaseable for long-term reliability
• Durable powder coat finish resists corrosion and wear
• Ships fully assembled and ready to install using OEM hardware

Roto-Joint Technology:

UMI's exclusive Roto-Joint design features a hard chrome-plated 4140 chromoly spherical ball rotating within a precision CNC-machined delrin race. This combination delivers the articulation of a spherical rod end while maintaining the quiet operation and comfort expected from street-driven vehicles. The delrin material offers superior wear resistance and maintains its physical properties over time, while the chromoly construction ensures extensive durability.

Adjustable and Rebuildable:

The Roto-Joints are fully adjustable and 100% rebuildable. As the delrin race experiences normal wear, the adjuster ring can be tightened using the included spanner wrench to maintain proper tension. If replacement becomes necessary, the delrin race can be easily serviced without replacing the entire joint.

Performance Benefits:

This hybrid design places polyurethane bushings on the chassis mounting point to absorb road shock and noise before entering the passenger compartment, while the Roto-Joint attaches to the rear axle for precise control. The result is improved traction, significant reduction in wheel hop, and precision handling that outperforms factory rubber and standard polyurethane bushings. Adjustable length allows proper rear axle centering and accommodation of wider tires.

What's Included:

• Pair of adjustable lower control arms
• Spanner wrench for Roto-Joint adjustment and service