What is the benefit of UMI's Roto-Joint technology?

UMI's Roto-Joints offer a significant range of movement, allowing the suspension to articulate freely without binding. This leads to improved handling, reduced wheel hop, and a more precise feel compared to stock rubber or standard polyurethane bushings.

How do the Roto-Joints and polyurethane bushings work together?

The Roto-Joints are installed on the rear end side for maximum articulation, while the softer polyurethane bushings are mounted to the chassis. This setup balances performance with comfort, absorbing road noise and shock while still providing precise control.

Do these control arms come with all necessary hardware for installation?

These control arms are designed to use your vehicle's OEM hardware for installation. They come fully assembled with the Roto-Joints and bushings already installed, ready to bolt onto your chassis.

UMI Performance 64-72 A-Body Boxed Lower Control Arms- Poly/Roto-Joint

Specifications

Brand: UMI Performance
Part #: 4041-R
UPC: 4041-R

UMI Performance 64-72 A-Body Boxed Lower Control Arms- Poly/Roto-Joint

Name: UMI Performance 64-72 A-Body Boxed Lower Control Arms- Poly/Roto-Joint
Brand: UMI Performance
Price: 391.67 USD
Availability: InStock

$391.67

On Backorder

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UMI Performance boxed lower control arms for 1964-1972 A-Body. Features Roto-Joints for bind-free performance and a comfortable ride.

Key Features

Fits 1964-1972 A-Body vehicles including Chevrolet Chevelle, Oldsmobile Cutlass, and Pontiac GTO.
Constructed from 3" x 1-1/2" x 1/8" rectangular steel tubing for a strong, boxed design.
Features UMI's Roto-Joint technology for 28 degrees of bind-free articulation and improved handling.
Includes greaseable Energy Suspension polyurethane bushings on the chassis end for a comfortable ride.
MIG and TIG welded construction ensures superior strength and durability.
Reinforced sway bar mounting holes with TIG welded sleeves are included.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

UMI Performance is known for making well-built suspension components that improve handling and durability. These boxed lower control arms are a prime example, designed to give your 1964-1972 A-Body vehicle a more controlled and comfortable ride. They replace your stock arms with a stronger, more precise unit that helps reduce unwanted flex and wheel hop.

Fabricated from thick 0.120" wall rectangular steel tubing, these control arms are built solid. They feature UMI's Roto-Joint technology on one end and greaseable Energy Suspension polyurethane bushings on the other. The Roto-Joints offer a generous 28 degrees of movement, allowing your suspension to articulate freely without binding, which is crucial for spirited driving or autocross. The polyurethane bushings are mounted to the chassis side, helping to absorb road noise and shock before it enters the cabin, contributing to a quiet and comfortable ride. The arms also include reinforced holes for rear sway bars, making them adaptable for various setups.

These control arms come fully assembled and ready to bolt on, using your OEM hardware. They are finished with a durable powder coat to resist corrosion and look great. If you're looking to improve your classic A-Body's rear suspension performance and ride quality, these control arms are a solid option.