UMI Performance 3040-R Rear Lower Control Arms with Roto-Joint Spherical Bushings

The UMI Performance 3040-R rear lower control arms deliver precision handling and bind-free suspension articulation for performance-driven street and track vehicles. Engineered with UMI's proprietary Roto-Joint technology, these control arms eliminate the limitations of factory rubber and aftermarket polyurethane bushings, allowing the suspension to move through its full range of motion without restriction.

Roto-Joint Technology:

Each control arm features spherical Roto-Joints installed on both ends for maximum performance and suspension travel. The Roto-Joint design incorporates a pivot ball lined with a greaseable Delrin race that provides 28 degrees of total unrestricted movement. This low-friction design allows precise rear axle control during aggressive cornering, autocross, and road racing while maintaining 100% street drivability. The Delrin race absorbs shock and road noise, ensuring quiet operation on daily driven vehicles.

Construction and Features:

• Constructed from 1.500" x 0.120" wall DOM (drawn over mandrel) mild steel tubing for exceptional strength
• Fully TIG welded construction for superior durability
• Reinforced sway bar mounting holes with 0.120" wall thickness steel sleeves, TIG welded and finished flush
• Compatible with OEM and aftermarket sway bars
• Uses factory hardware for straightforward installation
• Brilliant and durable powder coat finish for corrosion resistance
• Greaseable Roto-Joints for easy maintenance
• Shipped fully assembled and ready to install

These tubular lower control arms are ideal for enthusiasts seeking improved handling response, reduced suspension bind, and enhanced grip without sacrificing ride quality or comfort on the street.