Are these control arms adjustable?

Yes, the Roto-Joints themselves are adjustable and can also be rebuilt. This allows for fine-tuning and ensures long-term performance and serviceability of the control arms.

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 are shipped fully assembled and ready to install, but you will need to reuse your original bolts and nuts.

UMI Performance 78-96 GM B-Body Boxed Lower Control Arms- w/ Dual Roto-Joints

Specifications

Brand: UMI Performance
Part #: 3627-R
UPC: 3627-R

UMI Performance 78-96 GM B-Body Boxed Lower Control Arms- w/ Dual Roto-Joints

Name: UMI Performance 78-96 GM B-Body Boxed Lower Control Arms- w/ Dual Roto-Joints
Brand: UMI Performance
Price: 435.19 USD
Availability: InStock

$435.19

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

UMI Performance boxed lower control arms for 78-96 GM B-Bodies. Features Roto-Joints for bind-free performance and improved traction.

Key Features

Fits 1978-1996 GM B-Body vehicles including Buick LeSabre, Roadmaster, Chevrolet Caprice, Impala, Pontiac Bonneville, and Catalina.
Features UMI's Roto-Joint technology with a 4140 chrome moly ball in a delrin race for 28 degrees of bind-free movement.
Constructed from 3" x 1-1/2" x 0.120" wall rectangular steel tubing for strength.
MIG and TIG welded construction ensures superior durability.
CNC machined bushing holders provide accurate tolerances and a precise fit.
Accommodates stock and aftermarket rear sway bars with reinforced mounting holes.

⚠️ 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

Starting with the Roto-Joint technology, these UMI Performance boxed lower control arms are built to give your 1978-1996 GM B-Body a more connected feel to the road. The Roto-Joints use a 4140 chrome moly ball that rotates in a delrin race, offering 28 degrees of movement without binding. This smooth articulation helps eliminate arm flex and bushing deflection, which can significantly reduce wheel hop and improve overall traction, making them a solid choice for both street driving and track days.

These control arms are constructed from strong 3” x 1-1/2” rectangular steel tubing with a 0.120” wall thickness, and feature CNC machined bushing holders and MIG and TIG welded construction for added durability. The design also accommodates stock and aftermarket rear sway bars, with reinforced holes to handle the stress. They come fully assembled with a durable powder coat finish, ready to bolt on using your OEM hardware, and the Roto-Joints are adjustable and rebuildable for long-term use.