UMI 4040-R 64-72 A-Body Rear Lower Control Arms Roto-Joint, Red
Rear Lower Position, Tubular Control Arm Style, Steel
UMI's tubular lower control arms utilize our Roto-Joint technology for a bind free performance and quiet comfortable ride quality. The Roto-Joint design is a pivot ball lined with a greaseable delrin race designed to offer 28 degrees of total unrestricted movement, more than adequate for a bind free, low friction operation. The Roto-Joint design improves performance over the factory rubber and aftermarket polyurethane bushings by allowing the suspension to articulate correctly, and provide precision handling. The installed UMI Roto-Joint allows rear end free movement when high handling, auto cross or road race is a concern while still being a 100% streetable setup. The installed delrin race, which lines the spherical ball, absorbs shock and road noise for a quiet and smooth operation on any street or track driven vehicle. This control arm set features Roto-Joints on both sides of the control arms. This is designed for maximum performance and suspension travel. Both control arms feature the correct provisions for adding a stock or aftermarket sway bar. Sway bar holes are reinforced with a 0.120" wall thickness steel sleeve that TIG welded and sanded into place. All Roto-Joints are greaseable and low maintenance making an excellent street setup for your cruiser or race car!
- Constructed of 1.500" x 0.120" DOM mild steel tubing
- Spherical Roto-Joints installed
- Delrin race offers low deflection for improved traction
- Fully TIG welded
- Reinforced sway bar holes
- Shipped fully assembled and ready to install
- Uses OEM hardware
- Brilliant and durable powder coat finish
- This item ships directly from the manufacturer. It may take an additional 10 business days for UMI Performance to ship this item.
- This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
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Q & A
Learn about Speedway Motor's Fully Assembled Rear Control Arm Kit and how it saves time and hassle. In this video, Joe and Kyle explain the benefits of this new product.
Project Chevelle undergoes front suspension upgrades to minimize feeling every dip and bump in the road. Josh S. walks through the install and quick overview of the tubular control arms and G comp spindles.
Learn how replace lower and upper rear control arms. Read up on racer Steve's A-body control arm replacement and the bushings included kit he recommends.
Darrian explains the process of Shelby/Arning drop changes and how that affects your car.
Have a 1970-1994 GM A- or X-body in need of some new lower control arms? Take a look at what Speedway Motors' employee Steve L. has to say about our lower control arms!
Whether you are looking to change the look of your truck, get rid of your tired rusty springs, or upgrade the ride quality of your truck, Speedway Motors has you covered with stock height and lowered spring options.
In this Tech Tip, John responds to a customer question about tubular control arms.