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UMI Performance

UMI Performance 68-72 GM A-Body Adjustable Upper Control Arms - Ultimate Arms

MPN: 4017-b Catalog #: 001588652 Category: Control Arms Check Vehicle Fitment

Product Details

Adjustability is one the most important things when tuning in your street cars suspension. That is why we have taken the time to develop the ultimate on-car adjustable upper control arms for the rear on your GM vehicle. There were no short cuts when manufacturing these arms, only the best materials and components money can buy were used to build our Ultimate Arms. Well known weak areas where other manufactures use mild steel have been replaced with aircraft quality 4140 chromoly steel featuring a TIG welded construction. The upper control arm mounting points feature CNC machined 0.250 mild steel, 4140 chromoly tube adaptors and a high strength 4140 chromoly heat treated 1.000 solid adjuster, truly overkill for any application!

For ease of adjustment UMI has designed our Ultimate Arms with on-car adjustability. You can easily make pinion angle adjustments in the garage or at the track, it's as simple as loosening two jam nuts! Using UMI's unique chromoly on-car adjuster, simply turn the adjuster with the control arms on the car to quickly lengthen or shorten the length. Pinion angle adjustments are a must when wanting to lower your track 60-foot times, increase traction and reduce unwanted wheel hop. Our Teflon lined spherical rod end design allows for a bind free operation, making a great upgrade for both your track and auto cross driven car.

Features: - On-Car Adjustability - 4140 Chrome-Moly Threaded Tube Adapters - 4140 Heated Treated Chrome-Moly Adjusters - Hard Chrome Plated, Teflon/Kevlar Self Lubricating Race Rod Ends - Features Precision CNC Machining and Fully Welded - CNC Machined 6061 Aluminum Step Bushings - Durable Long Lasting Powder Coat Finish

UMI Performance 68-72 GM A-Body Adjustable Upper Control Arms - Ultimate Arms

1968-1972 GM A-Body Adjustable Upper Control Arms Ultimate Arms

Rear Control Arms

Vehicle Fitment

Please verify year, make, model, and any notes before ordering.

Product Specs

Brand
UMI Performance
Part Number
4017-b
Catalog Number
001588652
Product Line
Lower Control Arms
Category
Suspension
Type
Control Arms
UPC / Barcode
4017-B
Vendor Product Category
Suspension
Vendor Product Subcategory
Control Arms
Length
12.00 in
Width
8.00 in
Height
8.00 in
Weight
9.00 lb
Units Per SKU
1
Freight / LTL
No
Air Restricted
No
Prop 65
Y
CARB Approved
Yes
Clearance Item
No

Shipping & Availability

Current status 10 Available - Ready to ship
Estimated timing Ships from factory

This item is showing manufacturer availability and may ship directly from the manufacturer. Tracking details are provided as soon as they become available. ETA 0-5 Days to ship.

PROP 65 WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Inventory shown: 10 available as of 6/4/2026.

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