Suspension and Components› Front Suspension Components

UMI PERFORMANCE

UMI Performance 78-96 GM B-Body Adjustable Upper Control Arms- Ultimate Arms

$269.99

SKU: U01C 3617-R

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Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

These UMI Performance Ultimate "on car" adjustable upper control arms are designed for the rear suspension of GM B-Body vehicles. They are made from aircraft quality 4140 Chrome Moly steel with TIG welded construction. The mounting points feature CNC machined 0.250" mild steel, 4140 Chrome Moly tube adaptors, and a high strength 4140 Chrome Moly heat treated 1.000" solid adjuster.
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Part #: 3617-R

Adjustability is crucial when it comes to tuning your street car's suspension. Our Ultimate "on-car" adjustable upper control arms for the rear of your GM vehicle have been meticulously designed with the best materials and components available. We have replaced weak areas with aircraft quality 4140 Chrome Moly steel and utilized TIG welded construction for maximum durability. These control arms feature high quality QA1 spherical rod ends for a smooth and quiet operation. The Teflon lined rod ends prevent metal to metal contact, eliminating unwanted noise. The on-car adjustability of our Ultimate Arms makes it easy to make pinion angle adjustments, whether in the garage or at the track. With UMI's unique Chrome Moly on-car adjuster, you can quickly lengthen or shorten the control arm length with just two jam nuts. Pinion angle adjustments are essential for improving track 60-foot times, increasing traction, and reducing wheel hop. The bind-free operation of our rod ends makes them a great upgrade for both track and auto cross driven cars. Trust only the best-QA1 for long lasting performance.

UMI's Ultimate adjustable rear upper control arms feature 4140 Chrome Moly construction, QA1 Teflon-lined rod ends, and on-car adjustability for easy pinion angle tuning. They reduce wheel hop, improve traction, and are track-ready.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandUMI PERFORMANCE
Part NumberU01C 3617-R

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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