Suspension and Components Front Suspension Components

UMI PERFORMANCE

UMI Performance 64-72 GM A-Body Front Upper A-arms Adjustable 1/2in Taller Ball Joints

$719.99

SKU: U01C 4056-2-B

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Today's Pro Touring A-bodies are now able to handle better than ever before thanks to UMI's new adjustable upper a-arm. This a-arm features a ½" taller upper ball joint that improves the camber curve, resulting in increased front end grip. Additionally, the advanced design of the a-arm relocates the ball joint plate rearward for enhanced caster and improved steering feel. The UMI adjustable upper a-arm is constructed with a machined CrMo cross shaft that holds two precision rod ends for easy adjustment. TIG welded to the laser cut ball joint pad which houses the taller upper ball joint, this a-arm also includes a laser cut bump stop brace for added durability. The 4056-2 a-arm is designed to work with factory height spindles and increases spindle height by ½". Available in red or black powder coat finish, each set is hand-built in Philipsburg, PA using US materials. The Upper a-arm hardware kit (Part # 4003) includes 7/16" Grade 8 bolts, washers, and nylock nuts needed to mount the UMI Performance A-Arms to your vehicle.

Fitment

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Specifications

BrandUMI PERFORMANCE
Part NumberU01C 4056-2-B

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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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