UMI Performance 1061-B Lower Control Arms with Roto-Joint Technology

The UMI Performance 1061-B lower control arms are engineered for street performance enthusiasts seeking superior handling and on-car adjustability. These control arms feature UMI's proprietary Roto-Joint technology combined with polyurethane bushings to deliver a bind-free suspension with quiet ride quality suitable for daily driving.

Construction and Materials:

• Constructed from 1.250" x 0.120" DOM mild steel tubing for strength and durability
• TIG welded 4140 chromoly tube adapters ensure maximum strength at connection points
• Heat-treated chromoly adjuster allows on-car length adjustment
• Durable powder coat finish provides long-lasting corrosion protection
• Ships fully assembled and ready to install using OEM hardware

Roto-Joint Technology:

• Spherical Roto-Joints provide 28 degrees of total unrestricted movement
• 4140 chromoly hard chrome plated ball rotates in precision CNC machined delrin race
• Greaseable and 100% rebuildable design for long-term serviceability
• Adjustable tension ring maintains proper fit as components wear
• Eliminates suspension bind while reducing wheel hop and improving traction

Hybrid Design Benefits:

This control arm set features a hybrid configuration with polyurethane bushings on the chassis end and Roto-Joints on the axle end. The polyurethane bushings absorb road noise and shock before it enters the passenger compartment, while the Roto-Joints provide precision articulation and performance superior to factory rubber or aftermarket polyurethane bushings. Both ends are greaseable for low maintenance operation.

Adjustability and Applications:

The on-car adjustable design allows you to lengthen or shorten the control arms to move the rear axle forward or backward. This feature is essential for fitting larger tires, centering aftermarket rear ends, and preventing tire rubbing. The included spanner wrench enables easy adjustment of the Roto-Joint tension and facilitates disassembly for cleaning, inspection, and rebuilding.