UMI Performance 3038-R Rear Non-Adjustable Lower Control Arms Poly/Roto-Joint Red

The UMI Performance 3038-R rear lower control arms are a premium tubular replacement designed to eliminate the flex, bushing deflection, and bind found in factory lower control arms. Engineered for street performance enthusiasts, this set features a unique combination of Energy Suspension greaseable polyurethane bushings on the chassis side and UMI's proprietary Swivel Roto-Joint on the rear-end side — giving you the best of both worlds in ride quality and handling precision.

Roto-Joint Technology:

UMI's Roto-Joint is a pivot ball lined with a greaseable Delrin race, engineered to provide 28 degrees of total unrestricted movement for a truly bind-free operation. The 4140 chrome moly spherical ball and Delrin race absorb shock and dampen road noise, keeping the ride smooth and quiet whether on the street or the track. Unlike traditional rubber or aftermarket polyurethane bushings, the Roto-Joint allows the suspension to articulate correctly under high-performance driving conditions including autocross and road racing — while remaining 100% streetable. The Roto-Joint is also fully rebuildable and adjustable using an optional spanner wrench.

Key Features:

• Constructed of 1.500" x 0.120" DOM mild steel tubing for exceptional strength and rigidity
• Fully TIG welded construction for superior durability
• Swivel Roto-Joint installed on the rear-end side for bind-free articulation (28° of movement)
• Energy Suspension greaseable polyurethane bushings on the chassis side to absorb road noise and shock
• Reinforced sway bar holes with 0.120" wall thickness steel sleeve, TIG welded and sanded into place
• Compatible with stock or aftermarket sway bars
• Uses OEM hardware — no modifications required
• Shipped fully assembled and ready to install
• Brilliant red powder coat finish for durability and appearance
• All bushing ends and Roto-Joints are greaseable and low maintenance

The polyurethane bushing end mounts to the vehicle chassis, where its softer compound excels at absorbing road vibration before it enters the passenger compartment. The Roto-Joint end connects to the rear end housing, providing the free movement needed for performance driving applications. This combination makes the 3038-R an ideal upgrade for street performance builds, daily drivers, and weekend cruisers alike.