1. Control Arms Offers
  2. sku: 11609782489830604
  3. UMI PERFORMANCE 3039-R

UMI PERFORMANCE 3039-R Suspension Trailing Arm Gm Body Swap Upper 12-BOLT Adj

fits year: 1978–1988.

3039-r Umi Performance Suspension Trailing Arm - 3039 1978-1988 Gm G-body 12-bolt Swap Adj Upper

( Brand: Umi Performance ), ( Manufacturer Part Number: 3039-R ), ( Part Type: Suspension Arm ), ( Warranty: 1 Year ), ( Adjustable: Yes ), ( Bushing Color: White ), ( Bushing Material: Derlin ), ( Color: Red ), ( Control Arm Construction: Tubular ), ( Finish: Red Powdercoated ), ( Grade Type: Performance ), ( Material: Steel ), ( Mounting Hardware Included: No ), ( Mounting Type: Bolt In ), ( Country Of Origin: United States )

Review UMI PERFORMANCE Suspension Trailing Arm Gm G body 12-bolt Swap Adj Upper fits 1978–1988

UMI Performance 3039-R Suspension Trailing Arm for 1978-1987 GM G-Body 12-Bolt Swap Adjustable Upper

The UMI Performance 3039-R Suspension Trailing Arm is a precision-engineered component designed for 1978-1987 GM G-Body vehicles undergoing a 12-bolt swap. This trailing arm is an essential upgrade for those seeking improved handling, better ride quality, and superior durability.

This UMI Performance aftermarket trailing arm is meticulously crafted from high-strength steel, ensuring robustness and reliability. It is designed to replace the original OEM trailing arm, which may not provide the necessary support for a 12-bolt swap. The UMI 3039-R is engineered to accommodate the increased loads and forces generated by a more potent powertrain.

One of the standout features of the UMI Performance 3039-R Suspension Trailing Arm is its adjustable upper mount. This feature provides the flexibility to fine-tune the suspension geometry, allowing for precise alignment and optimal alignment with the chassis. Adjustments can be made quickly and easily, enabling users to dial in their desired ride characteristics.

The UMI Performance 3039-R Suspension Trailing Arm also incorporates bushings made from high-quality, durable material. These bushings help reduce vibrations and noise, providing a smoother, quieter driving experience. They are also designed to last longer than OEM bushings, reducing the need for frequent replacements.

Installation of the UMI Performance 3039-R Suspension Trailing Arm is a straightforward process, making it an excellent choice for DIY enthusiasts. It is compatible with factory and aftermarket suspension systems, providing flexibility for various applications. Additionally, the included installation instructions make the process as hassle-free as possible.

By upgrading to the UMI Performance 3039-R Suspension Trailing Arm, you can significantly enhance the performance and driving experience of your 1978-1987 GM G-Body vehicle. This component is an essential addition for anyone undertaking a 12-bolt swap and seeking improved handling, better ride quality, and superior durability.

UMI Performance 3039-R Suspension Trailing Arm for 1978-1987 GM G-Body 12-Bolt Swap: A Comprehensive Analysis

The UMI Performance 3039-R Suspension Trailing Arm is a popular aftermarket upgrade for those performing a 12-bolt swap on their 1978-1988 GM G-Body vehicles. This analysis aims to provide a clear understanding of the product's advantages, disadvantages, and an ultimate recommendation.

Pros:

1. Enhanced Handling: The UMI 3039-R Trailing Arm provides better handling characteristics by improving the vehicle's geometry and rigidity.

2. Adjustability: The adjustable upper mounts allow fine-tuning of the suspension setup to cater to various driving styles and track conditions.

3. Durability: Constructed from high-quality materials, the UMI trailing arm is designed to withstand the rigors of high-performance driving.

4. Compatibility: The UMI 3039-R is compatible with various aftermarket suspension components and brakes, allowing for extensive customization options.

5. Improved Clearance: The UMI trailing arm design offers improved clearance for larger wheels and tires, making it an attractive option for those seeking increased ground clearance.

Cons:

1. Cost: The UMI Performance 3039-R Suspension Trailing Arm is a premium aftermarket part, which may be a significant investment for some enthusiasts.

2. Installation Complexity: Installing the UMI trailing arm requires a fair amount of mechanical expertise and time commitment.

3. Potential Need for Additional Components: Depending on the specific vehicle and suspension setup, additional components (such as adjustable sway bars or alignment tools) might be necessary to fully optimize the performance of the UMI trailing arm.

Conclusion:

The UMI Performance 3039-R Suspension Trailing Arm offers numerous benefits, including enhanced handling, adjustability, durability, compatibility, and improved clearance. However, its premium cost and installation complexity are considerations that must be taken into account. Ultimately, for those seeking to maximize the performance of their 1978-1988 GM G-Body 12-bolt swap project, the UMI 3039-R trailing arm is a worthwhile investment.

Details:

UMI Suspension Trailing Arm - 3039 1978-1988 GM G-Body 12-Bolt Swap Adj Upper. Need advice on which exhaust system to purchase. Choose from components like cross members, pan hard bars, control arms, K-members, sub frame connectors, and more. UMI focuses on muscle cars from the 1960s to today A-bodies, F-bodies, B-bodies, G-bodies, and Mustangs.

Having trouble deciding on whether to get a folding or roll-up tonne cover. Part #: 3039-R. Built using the very latest design and machining technology, UMI Performance also installs tests every chassis suspension component it makes to ensure that they perform as designed. ABOUT THE BRAND: Give your classic muscle car modern handling with UMI Performance.

part #: 3039 price

  • $299.99

specifications controlarma:

  • for years: 1978-1988
  • brand: Umi Performance
  • mpn: 3039-r
  • part type: Suspension Arm
  • warranty: 1 Year
  • adjustable: Yes
  • bushing color: White
  • bushing material: Derlin
  • color: Red
  • control arm construction: Tubular
  • finish: Red Powdercoated
  • grade type: Performance
  • material: Steel
  • mounting hardware included: No
  • mounting type: Bolt In
  • country of origin: United States

payments controlarma:

  • other
  • credit card: Mastercard
  • wallet: Apple-pay

offer controlarma:

  • sold: 0
  • quantity: 2
  • options: Ship-to-home
  • availability: In Stock
  • started: July 12, 2025

general controlarma:

  • Car Truck Parts Accessories > Steering Suspension > Radius, Swing Trailing Arms
  • condition: New

seller controlarma:

  • city: Arlington, Texas
  • rating: 94.5%
  • # reviews: 2803

returns controlarma:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Buyer

shipping controlarma:

  • transit: 5-10 Days
  • service: FedEx Ground or FedEx Home Delivery, UPS Ground
  • carrier: FedEx, UPS
  • cost: $0.00
  • type: Fixed
  • class: Standard
for years: 1978-1988, part type: suspension arm, warranty: 1 year, adjustable: yes, bushing color: white, bushing material: derlin, control arm construction: tubular, finish: red powdercoated, grade type: performance, mounting hardware included: no, mounting type: bolt in, country of origin: united states,
category: auto parts > car truck parts accessories > steering suspension > radius, swing trailing arms, color: red, material: steel, sku: 11609782489830604,
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