How do I adjust the pinion angle with these control arms?

The arms feature a CrMo adjuster that allows for on-car adjustment. You can make changes to your pinion angle while the control arms are still bolted to the vehicle, simplifying the tuning process.

What is the benefit of the polyurethane bushings?

The greaseable polyurethane bushings help to minimize suspension deflection. This results in a crisper handling setup, reduced wheel hop, and a more direct feel from the rear suspension.

Do these control arms come with all the necessary hardware for installation?

The control arms are designed as a bolt-in replacement for your factory arms. Refer to the manufacturer's installation instructions for a complete list of included components and any additional hardware that may be required.

UMI Performance 64-67 GM A-Body Adjustable Upper Control Arms- Poly Bushings

Specifications

Brand: UMI Performance
Part #: 4026-B
UPC: 4026-B

UMI Performance 64-67 GM A-Body Adjustable Upper Control Arms- Poly Bushings

Name: UMI Performance 64-67 GM A-Body Adjustable Upper Control Arms- Poly Bushings
Brand: UMI Performance
Price: 271.99 USD
Availability: InStock

$271.99

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UMI Performance adjustable rear upper control arms for 64-67 GM A-Body. Features greaseable poly bushings for crisp handling and easy pinion angle tuning.

Key Features

Fits 1964-1967 Buick Special, Buick Sportwagon, Chevrolet Chevelle, Chevrolet El Camino, Oldsmobile 442, Oldsmobile Cutlass, Oldsmobile Vista Cruiser, Pontiac GTO, Pontiac Grand Prix, Pontiac LeMans, and Pontiac Tempest.
Adjustable on the vehicle for easy pinion angle tuning.
Greaseable polyurethane bushings with zinc plated steel sleeves minimize suspension deflection.
CrMo threaded adapters offer improved thread strength.
Constructed with 1/4" thick CNC laser cut mounting pads.
Features a durable and long-lasting powder coat finish.

⚠️ 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 1964-1967 GM A-Body like a Chevelle, GTO, or Skylark and want to dial in your rear suspension, these adjustable upper control arms from UMI Performance are a solid choice. They replace your stock arms and give you the ability to fine-tune your pinion angle and reduce unwanted suspension movement, which can lead to less wheel hop and a crisper feel when you're driving hard.

These arms are built tough with thick, CNC laser-cut mounting pads and a mix of TIG and MIG welding for strength. The greaseable polyurethane bushings help minimize deflection, giving you a more direct connection to the road, while the CrMo adjuster allows for easy on-car adjustments without having to remove the arms. This makes setting your pinion angle much simpler, especially if you're changing rear ends or modifying your driveline. They come with a durable powder coat finish and are made right here in the USA.

Installation is straightforward, typically taking 1-2 hours with basic hand tools, and they bolt right in as a replacement for your factory arms. These are designed to work with all rear end housings for the specified GM A-Body models.