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Auto Barn
Est. 1957
UMI Performance

UMI Performance 78-88 G-Body S10 Tubular Front Upper & Lower A-Arms Delrin

$1512.31

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UMI Performance tubular front upper & lower A-arms for 1978-1988 G-Body/S10. Improves handling with Delrin bushings and better clearance.

Key Features

  • Fits 1978-1988 Buick Regal, Chevrolet S10, GMC Sonoma, Oldsmobile Cutlass Supreme, Pontiac Grand Prix, and many other G-Body and S10 vehicles.
  • Features UMI-designed and manufactured greaseable Delrin bushings in both upper and lower arms for precise handling and smooth suspension action.
  • Includes premium ball joints and polyurethane bump stops pre-installed in both upper and lower A-arms.
  • Upper ball joint mounting pad is relocated to increase caster without excessive shims, improving steering feel.
  • Lower ball joint mount is angled to allow for use with lowered vehicles and offers increased wheel and tire clearance.
  • Constructed from TIG-welded DOM tubing for superior strength and a clean look, with CNC machined ball joint holders and tubing radiuses.

⚠️ 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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About this part

Product Details

If you're looking to improve the handling and street performance of your 1978-1988 G-Body or S10 vehicle, especially if it's lowered or has a powerful engine, these tubular A-arms from UMI Performance are a solid upgrade over stock. They replace the original stamped arms with a much stronger, fabricated design that's built to handle more demanding driving conditions, whether on the street, drag strip, or track.

These A-arms are built with DOM tubing and feature UMI's in-house manufactured greaseable Delrin bushings. Delrin is known for its low deflection and smooth operation, which translates to more precise steering feel and better suspension response. The lower arms are designed with a slight angle to provide extra clearance for lowered vehicles and larger tires, while the upper arms have a relocated mounting pad to increase caster without needing excessive shims, improving steering stability. Both sets come pre-assembled with premium ball joints and are TIG welded in critical areas for maximum strength and a clean appearance. The kit also includes recommended alignment specifications and detailed installation instructions to help you get the most out of your new suspension setup.

This kit is designed to work with factory or drop spindles, and accommodates factory springs, lowering springs, and coil-over kits like the popular QA1 setups. It also offers a weight savings of about 8 pounds over the factory components. The hardware kit, sold separately, includes Grade 10.9 metric bolts, washers, and nylock nuts for a secure installation. These A-arms are manufactured in the USA and come finished in a durable glossy red or black powder coat.

Specifications

Brand
UMI Performance
Manufacturer Part #
303233-R
UPC
303233-R

Frequently Asked Questions

UMI Performance 78-88 G-Body S10 Tubular Front Upper & Lower A-Arms Delrin

$1512.31