What is the advantage of the Roto-Joint over a standard bushing?

The UMI Roto-Joint offers significantly more range of motion, up to 28 degrees, which allows the suspension to articulate freely without binding. This leads to improved handling and a smoother ride by reducing friction and absorbing shocks effectively.

Does this kit include all the necessary hardware for installation?

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

How do I maintain the Roto-Joints and bushings?

Both the Roto-Joints and the polyurethane bushings are greaseable. Regular greasing will help ensure smooth operation, reduce wear, and maintain the quiet ride quality of the control arms.

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

Specifications

Brand: UMI Performance
Part #: 3038-B
UPC: 3038-B

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

Name: UMI Performance 78-88 G-Body Lower Control Arms- Poly/Roto-Joint Combination
Brand: UMI Performance
Price: 359.03 USD
Availability: InStock

$359.03

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UMI Performance 78-88 G-Body Lower Control Arms- Poly/Roto-Joint Combination. Offers improved handling and a comfortable ride for your G-Body.

Key Features

Fits 1978-1988 Buick Regal, Chevrolet Malibu, Chevrolet Monte Carlo, Oldsmobile Cutlass, Pontiac Grand Prix, and Pontiac LeMans.
Combines a greaseable polyurethane bushing on the chassis side with a UMI Roto-Joint on the rear end side.
Roto-Joint technology allows for 28 degrees of unrestricted movement, reducing binding and improving handling.
Delrin race within the Roto-Joint absorbs shock and road noise for a quiet, comfortable ride.
Constructed from strong 1.500" x 0.120" DOM mild steel tubing.
Features 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

If you're working on a 1978-1988 G-Body, like a Chevrolet Monte Carlo or Pontiac Grand Prix, and want to improve how it handles and rides, these lower control arms from UMI Performance are a solid option. They combine a durable polyurethane bushing on one end with UMI's own Roto-Joint on the other. This setup is designed to give you better performance on the street or track without making the ride uncomfortable.

The Roto-Joint is a key part of what makes these arms work well. It uses a pivot ball with a greaseable Delrin race that allows for a lot of movement, up to 28 degrees. This means your suspension can articulate freely, reducing binding and friction, which translates to more precise handling compared to stock rubber or basic polyurethane bushings. The Delrin race also helps absorb road noise and shock, keeping the ride quiet and smooth. On the chassis side, the polyurethane bushings are chosen for their ability to absorb more road noise and impact before it gets into the cabin, making it a comfortable setup for daily driving. Both arms are built from strong 1.500" x 0.120" DOM mild steel tubing and come fully assembled with greaseable bushings and Roto-Joints, ready to bolt on.

These control arms also feature reinforced sway bar mounting holes, with a TIG-welded steel sleeve for added strength. They are finished with a durable powder coat and use your vehicle's original hardware for installation. This combination of features makes them a well-built choice for improving the performance and ride quality of your G-Body.