Specifications
- Brand
- UMI Performance
- Part #
- 361517-B
- UPC
- 361517-B

UMI Performance 78-96 GM B-Body Boxed Lower Control Arm & Adjustable Upper Control Arm Kit
$652.79
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UMI Performance 78-96 GM B-Body Boxed Lower Control Arm & Adjustable Upper Control Arm Kit. Strong, adjustable, and precision-built for improved ride and rear end tuning.
Key Features
- Fits 1978-1996 Buick LeSabre, Roadmaster, Chevrolet Caprice, Impala, and Pontiac Bonneville, Catalina.
- Includes boxed lower control arms with grease-able polyurethane bushings and reinforced sway bar holes.
- Includes on-car adjustable upper control arms for easy pinion angle tuning.
- Upper control arms feature QA1 Teflon-lined spherical rod ends to eliminate rear end bind.
- Upper control arms utilize 4140 Chrome Moly threaded tube adaptors and heat-treated adjusters for durability.
- All components are CNC machined for precise tolerances and accuracy.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
This kit from UMI Performance gives you a set of their boxed lower control arms and a set of their on-car adjustable upper control arms, also known as the "Ultimate Arms." These are direct replacements for your stock setup, designed to add strength, improve ride quality, and allow for precise rear end adjustment on a wide range of GM B-Body vehicles from 1977 to 1996, including models like the Chevrolet Caprice, Buick LeSabre, and Pontiac Catalina.
The lower control arms are well-built with grease-able polyurethane bushings that help absorb road vibrations and reduce noise. They also feature reinforced sway bar holes for added durability. The upper "Ultimate Arms" are where the real tuning happens. They offer on-car adjustability using right and left-hand threads, making it simple to dial in your pinion angle without removing the arms. These arms incorporate a 4140 Chrome Moly adjuster and a QA1 Teflon-lined spherical rod end. This rod end is key to eliminating rear end bind, which can happen with stiffer suspension setups, and the Chrome Moly components ensure these adjusters are built to last.
Each component in this kit is CNC machined for exact tolerances, ensuring a precise fit and consistent performance. The combination of these strong, adjustable control arms will help you achieve better handling and a more comfortable ride. You'll want to refer to the manufacturer's installation instructions for specific details on mounting and adjustment procedures.
Specifications
- Brand
- UMI Performance
- Manufacturer Part #
- 361517-B
- UPC
- 361517-B
Frequently Asked Questions
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UMI Performance 78-96 GM B-Body Boxed Lower Control Arm & Adjustable Upper Control Arm Kit
