Suspension and Components› Rear Suspension Components
UMI PERFORMANCE
UMI Performance 78-88 GMC G-Body Rear Coilover Bracket Kit
SKU: U01C 3054
Easy — 1–2 hours
Description
Part #: 3054
UMI's bolt-in rear coilover bracket kit is a complete mounting solution for your Quick Performance axle in your 1978-1988 GM G-Body. This race-proven lower bracket bolts in using the adjustable trailing arm mounting holes. This bracket features a multi-position design to allow further fine tuning of ride height and shock location ("). In addition to shock location adjustability, the UMI 3054 features five positions of trailing arm location adjustment to match the Quick Performance adjustable lower control arm brackets. This adjustment is popular on lowered cars, for drag racing traction, or whenever a geometry change is desired. The kit also features upper reinforcement tabs to distribute the load from the T-bar as well as complete upper and lower hardware. There is no cutting required and your car can be returned to stock at any time. 100% designed, manufactured and raced out of Philipsburg, PA-USA and always US materials.
UMI's rear coilover bracket kit for 1978-1988 GM G-Bodies fits Quick Performance axles and offers multi-position adjustability for ride height and shock placement ("). Includes 5 trailing arm positions. Minor drilling required.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
Constructed from 3/16" Made In USA mild steel, this kit is laser-cut and powder-coated black for durability. It includes upper reinforcement tabs and all necessary hardware, with no cutting required for installation. The kit is 100% designed, manufactured, and raced in the USA using US materials.
Fitment
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Specifications
| Brand | UMI PERFORMANCE |
| Part Number | U01C 3054 |
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Buy with Confidence
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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