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$259.99
UMI 4039-B 68-72 A-Body Adj. Upper Control Arms, Roto-Joint,Black
UMI 4039-B 68-72 A-Body Adj. Upper Control Arms, Roto-Joint,Black

UMI 4039-B 68-72 A-Body Adj. Upper Control Arms, Roto-Joint,Black

Rear Upper Position, Fully Adjustable Control Arm Style, Steel

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UMI 4039-B 68-72 A-Body Adj. Upper Control Arms, Roto-Joint,Black
UMI 4039-B 68-72 A-Body Adj. Upper Control Arms, Roto-Joint,Black
UMI 4039-B 68-72 A-Body Adj. Upper Control Arms, Roto-Joint,Black
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UMI 4039-B 68-72 A-Body Adj. Upper Control Arms, Roto-Joint,Black
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We estimate this item will ship on or before October 14th.
Part # 1854039B
$259.99
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Details

Position:
Rear Upper
Control Arm Style:
Fully Adjustable
Material Type:
Steel
Adjustable:
Yes
Bushing Material:
Delrin
Ball Joint Included:
No
Bushing Included:
Yes
Hardware Included:
No
Finish:
Powder Coated
Color:
Black
MFG. Part #:
4039-B
Sold in Quantity:
Set

Info

UMI’s Roto-Joint adjustable rear upper control arms are a bulletproof addition to your street or pro-touring car. UMI’s Roto-Joint upper control arms are suitable for street, strip or corner carving. The premium UMI built spherical joint drastically minimizes suspension deflection for a crisp handling setup, easy pinion angle tuning and less wheel hop. These on car adjustable upper control arms adjust easily while staying bolted to the car and are designed to handle virtually any application. The Roto-Joints combined with UMI’s in house designed and machined Chromoly adjuster equal ultimate strength and performance. These heavy duty arms feature ¼” thick CNC laser cut mounting pads and a mix of TIG and MIG welding. These simple bolt in replacements install in 1-2 hours and are designed to work on all rear end housings. Launch harder and turn faster with UMI’s ultimate arms!

Features

On car adjustment using UMI designed & manufactured Chromoly adjuster

UMI designed Roto-Joints

Chromoly threaded adapters for improved thread strength

CNC laser cut ¼” upper mounting pads

Durable and long lasting powder coat finish

Made in Philipsburg, PA – USA

Installation: Item installs in approximately 1-2 hours using basic hand tools.

Charts

Installation Instructions (PDF)

Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 10 business days for UMI Performance to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
Some parts are not legal for use in California or other states with similar laws/regulations

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Reviews

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Videos & Articles
  • 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.

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