UMI Performance 2035-R Double Adjustable Lower Control Arms with Roto-Joints - Rear

The UMI Performance 2035-R double adjustable rear lower control arms deliver bind-free suspension performance and on-car adjustability for muscle cars and performance vehicles. These control arms feature UMI's proprietary Roto-Joint technology on both ends, providing 28 degrees of total unrestricted movement for optimal suspension articulation while maintaining excellent street manners.

Key Features:

• Constructed from 1.250" x 0.120" DOM (Drawn Over Mandrel) mild steel tubing for exceptional strength
• TIG welded 4140 chromoly tube adapters with left and right hand threads for easy on-car length adjustment
• Greaseable and rebuildable Roto-Joints installed on both ends for maximum performance and suspension travel
• Allows adjustment of wheelbase to accommodate larger tires or center aftermarket rear axle assemblies
• Durable powder coat finish for long-lasting corrosion resistance
• Uses factory OEM mounting hardware for direct bolt-in installation
• Ships fully assembled and ready to install

Roto-Joint Technology:

UMI's Roto-Joint design combines the precision of a spherical rod end with the street-friendly characteristics of a bushing. The joint features a hard chrome plated 4140 chromoly spherical ball that rotates within a CNC-machined Delrin race. This configuration allows unrestricted suspension movement while preventing bind, improving traction, and significantly reducing wheel hop. The Delrin material provides excellent wear resistance and maintains its physical properties over time, while also absorbing shock and road noise for quiet operation. The adjustable design means the tension can be increased as wear occurs, and the Delrin race is fully replaceable for complete rebuildability.

These control arms are ideal for street performance, autocross, road racing, and drag racing applications where suspension precision and adjustability are critical. The combination of strength, adjustability, and low-friction operation makes them an excellent upgrade over factory rubber or aftermarket polyurethane bushing designs.