Upper Control Arms

For ease of adjustment UMI has designed our upper control arms with on car adjustability. Pinion angle adjustments can easily be made in the garage or at the track and making adjustments is as simple as loosening two jam nuts. Using UMI’s chrome moly on car adjuster, simply turn the adjuster with the control arms attached to the vehicle to quickly lengthen or shorten the control arm. As the control arms are shortened or lengthen the rotate the rear end changing the pinion angle. Pinion angle adjustments are crucial when wanting to lower your track 60 foot times, increase traction and reduce unwanted wheel hop.

Additional Information

UMI’s adjustable upper control arms use greaseable Roto-Joints for bind-free suspension movement, sharper handling, and quiet street manners. On-car adjustability makes pinion angle changes easy, improving traction and reducing wheel hop.

• 4140 chromoly threaded tube adaptors
• Brilliant and durable powder coat finish
• Mounting plate CNC machined from 0.250” thick mild steel
• On car adjustable using a chromoly, heat treated adjuster
• Shipped fully assembled and ready to install
• Spherical Roto-Joints installed
• Uses OEM hardware

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	umi362224-R	UMI 78-96 GM B-Body Trailing Arm Kit - Red (1x umi3624-R, 1x umi3622-R)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information