UMI Performance 4043B Rear Lower Control Arms - Adjustable with Roto-Joints

The UMI Performance 4043B double adjustable rear lower control arms deliver bind-free suspension performance and on-car adjustability for muscle cars and performance vehicles. These premium control arms feature UMI's proprietary Roto-Joint technology on both ends, providing 28 degrees of unrestricted movement for optimal suspension articulation whether you're cruising the street, hitting the drag strip, or carving corners on a road course.

Key Features:

• Roto-Joint Technology: Greaseable spherical pivot balls with Delrin race liners offer superior performance over OEM rubber and polyurethane bushings while absorbing shock and road noise for quiet operation
• On-Car Adjustment: CNC machined left and right hand threads allow easy length adjustment to move the rear axle forward or backward for tire clearance or aftermarket rear end centering
• Premium Construction: Fabricated from 1.500-inch DOM (drawn over mandrel) mild steel tubing with TIG welded 4140 chromoly threaded tube adapters for maximum strength
• Sway Bar Provisions: Includes factory and aftermarket sway bar mounting holes reinforced with 0.120-inch wall thickness steel sleeves, TIG welded and finished smooth
• Low Deflection Design: Delrin race construction provides improved traction and precise handling with minimal friction
• Durable Finish: Professional powder coat finish resists corrosion and maintains appearance
• Ready to Install: Ships fully assembled using OEM mounting hardware for direct bolt-in installation

Ideal for street performance, autocross, road racing, and drag racing applications, these control arms provide the adjustability needed for aftermarket rear end installations and the performance characteristics demanded by serious enthusiasts. Low maintenance and fully greaseable for long-term reliability.