What is the benefit of the Roto-Joints compared to standard bushings?

UMI's Roto-Joints offer 28 degrees of unrestricted movement, allowing the suspension to articulate more freely without binding. This leads to improved handling and reduced wheel hop, while the delrin race helps absorb road noise for a quieter ride.

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

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

Can I install a rear sway bar with these control arms?

Yes, these control arms feature reinforced provisions for adding a stock or aftermarket rear sway bar. The sway bar holes are reinforced with a steel sleeve for added strength.

UMI Performance 78-88 G-Body Boxed Lower Control Arms- Poly/Roto-Joint

Specifications

Brand: UMI Performance
Part #: 3041-R
UPC: 3041-R

UMI Performance 78-88 G-Body Boxed Lower Control Arms- Poly/Roto-Joint

Name: UMI Performance 78-88 G-Body Boxed Lower Control Arms- Poly/Roto-Joint
Brand: UMI Performance
Price: 391.67 USD
Availability: InStock

$391.67

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UMI Performance boxed lower control arms for 78-88 G-Body. Features Roto-Joints for bind-free performance and improved traction.

Key Features

Fits 1978-1988 Buick Regal, Chevrolet Malibu, Chevrolet Monte Carlo, Oldsmobile Cutlass, Pontiac Grand Prix, and Pontiac LeMans.
Boxed lower control arms fabricated from 3" x 1-1/2" x 1/8" rectangular steel tubing.
Features UMI's Roto-Joints with a delrin race for 28 degrees of bind-free movement and improved handling.
Includes Energy Suspension greaseable polyurethane bushings on the chassis side for shock absorption.
MIG and TIG welded construction ensures superior strength and durability.
Reinforced sway bar mounting holes with a TIG welded steel sleeve.

⚠️ 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 designed for 1978-1988 G-Body vehicles, like the Chevrolet Monte Carlo or Pontiac Grand Prix, and are built to give you a noticeable improvement in traction and a reduction in wheel hop. They use a combination of Energy Suspension polyurethane bushings on the chassis side and UMI's own Roto-Joints on the rear end side.

The control arms themselves are fabricated from strong 3" x 1-1/2" rectangular steel tubing with 0.120" wall thickness, and are MIG and TIG welded for solid construction. The Roto-Joints are a key feature here; they offer 28 degrees of movement and have a delrin-lined race that absorbs shock and road noise, providing a bind-free, low-friction operation that's still comfortable enough for daily driving. This setup helps the suspension articulate correctly, leading to more precise handling and better grip, especially during spirited driving or auto-cross events. The polyurethane bushings are on the chassis side to absorb more road vibration before it enters the cabin, while the Roto-Joint connects to the rear end.

These control arms come fully assembled and ready to bolt on, using your stock hardware. They also include reinforced provisions for adding a rear sway bar, which is a nice touch for those looking to further dial in their suspension setup.