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UMI Performance 1978-1988 GM G-Body Rear Coilover Bracket Kit, Control Arm Relocation, Bolt In
$259.99
  • Key Features:
  • ??????????? x 1-??????????? mount fits most standard racing shocks.
  • Upper T-bar reinforcement tab and hardware included.
  • 100% Bolt in design features control arm relocation as well as shock height adjustability.
  • Brackets manufactured entirely from 3/16??????? Made In USA mild steel.
  • Laser cut for consistency and a precise fit.
  • Powder coated black for a long lasting finish.
  • Optional shock tower reinforcement brace available. (P/N 3055)
  • Designed, tested, manufactured and raced in Philipsburg, PA-USA

UMI????????s bolt-in rear coilover bracket kit is a complete mounting solution for your factory axle 1978-1988 GM G-Body. This race-proven lower bracket bolts in using the standard trailing arm mounting hole as well as an additional reinforcement hole normally used by the standard rear shock. 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 3048 features three positions of trailing arm location adjustment to fine tune instant center. 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.

Installation & Fitment Note: Coilover brackets are designed to fit factory rear end housings ONLY and may not fit aftermarket rear ends. Coilover kit P/N 3049 offers more clearance and options for aftermarket rear ends than P/N 3048. UMI recommends installing the 3048 bracket kit, setting the ride height as desired, then purchasing the correct length shocks. Contact us for recommendations.

Rear shocks may not clear all exhaust tail pipes. UMI is not responsible for exhaust clearance issues.

Installation: UMI recommends installing the 3048, setting the ride height as desired, then purchasing the correct length shocks. Contact us for recommendations.

Optional Shock Tower Brace P/N 3055-????P/N 3055 is designed to tie the left and right rear shock towers together for additional chassis reinforcement. UMI????????s P/N 3055 has been designed to clear most popular exhaust systems however fitment with all exhaust systems is not guaranteed.

Installation Note:????Rear shocks may not clear all exhaust tail pipes. UMI is not responsible for exhaust clearance issues. These brackets are designed to fit factory rear ends and may not fit aftermarket rear ends. Coilover kit P/N 3049 offers more clearance and options for aftermarket rear ends than P/N 3048.

Fitment Notes: When using a factory style control arm mounted sway bar when lowering control arms the sway bar ground clearance will be less.

Features

  • Color: Black
  • Attachment Type: Bolt On
  • Bolt In or Welded In: Bolt In
  • California Proposition 65: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Notes:

Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

UMI Performance Banner

Who is UMI Performance?

UMI Performance is an aftermarket company that specializes in building high-quality suspension parts. But before they were known as a suspension manufacturer, they manufactured precision parts for major brands such as Corning Asahi, Sony, and Bell+Howell. They may have shifted industries, but their dedication to creating quality products has remained the same.

Quality Products Made In The USA

All of their products are made in-house, which allows them to control every aspect of their products. 100% made in the USA, they can maintain their high standards and create suspension parts that can tackle any street, whether it be the fast corners of a race track or the bumpy road to your grocery store.

Parts Bred From The Racetrack

UMI Performance actively participates in various racing disciplines since most of their product engineers and sales team are racers. Because of this, they can test their products through real-life racing scenarios, which helps them gather data that can help improve their products.

Easy To Install Parts

Each product is designed to replace factory-installed parts without any significant modification. It is carefully measured to ensure that it would fit perfectly into the vehicle and comes with a step-by-step instructional manual, giving their customers a hassle-free installation experience.

Purchase UMI Performance At Vivid Racing

If you are in the market for high-quality suspension parts for your vehicle, then look no further, as UMI is the brand for you. To know more about UMI, visit Vivid Racing and check out their list of products that fit your specific need.

UMI Performance warrants all UMI Performance products for a period of two (2) years from the original date of purchase.

This warranty is valid against defects in materials and workmanship for the two (2) year warranty period. It is not valid against defect resulting from, but not limited to:
    Misuse and/or abuse, neglect or accident.
    Exceeding the item(s) design limits.
    Improper installation.
    Acts of God, including lightning, floods, earthquakes, fire or high winds.
    Damage in handling, including damage encountered during shipment.
This warranty is valid for the original purchaser of the UMI Product. Warranty is not transferable or valid for second ownership.

This warranty shall be considered void if the warranted product is in any way altered, adjusted, tampered with or defaced.

The two (2) year warranty does not apply to normal wear and tear (the gradual deterioration of an asset which results naturally from use and/or age, i.e. bearings, bushings, etc.).

Non UMI manufactured parts are not covered or valid under this UMI Performance warranty.

UMI Performance cannot guarantee compatibility or performance of its products with other components used in conjunction with UMI Performance products.

UMI Performance cannot assume responsibility for any damages to UMI Products nor for claims for personal injury or property damage resulting from the use of UMI Performance's products or the improper operation thereof or consequential damages arising from the products or use of the products

.UMI Performance two (2) year warranty excludes incidental charges incurred by the end user in the event of breakage (towing, labor, installation, etc.). By their very nature, competition suspension parts are continuously expected to exceed to their limits (either by race or road use). UMI suspension components are designed to withstand intense race conditions, although it is impossible to control the quality of installation or the varying conditions in which they are used.

This warranty supersedes all other warranties and may only be modified by statement in writing, signed by UMI Performance owners/principals.

All Warranties implied by law, including the warranties of merchantability and fitness for a particular purpose, are hereby limited to the warranty period herein and shall expire at the end of such period.

Installation Instructions

Click to view the Installation Instructions here

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Things
Sale price None
Wholesale price $245.43
Shipping Weight: 13.00
Length: 6
Width: 6
Height: 12
Product Added At Friday 05 June, 2020
Product Modified At Wednesday 28 May, 2025
Imported By ETLOverride
Last Edited By kathi@vividracing.com
View In Admin

Emissions Info
Carb Approved -
Carb Number -
Epa Status N/A
Prop65 Yes
Carb Required -
Vendors
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Vendor Inv Cost Retail Jobber MAP Core Updated
UMI Performance $207.99 $259.99 ? $259.99 ? 2025-05-28 12:59:37


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