Specifications
- Brand
- UMI Performance
- Part #
- 301519-B
- UPC
- 301519-B

UMI Performance 78-88 GM G-Body 12-Bolt Swap Upper and Lower Control Arm Kit
$565.75
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UMI Performance 78-88 GM G-Body 12-Bolt Swap Upper and Lower Control Arm Kit. Control Arms
Key Features
- Fits 1978-1988 Buick Regal, Chevrolet Malibu, Chevrolet Monte Carlo, Oldsmobile Cutlass, Pontiac Grand Prix, and Pontiac LeMans.
- Designed to bolt a 1964-1972 GM A-Body 10-bolt or 12-bolt rear end into a 1978-1988 GM G-Body chassis.
- Upper control arms are specifically shaped to correctly attach to the G-Body chassis and A-Body rear end mounting 'ears'.
- Helps prevent rear end bind, incorrect driveline angles, traction loss, vibrations, and unsafe handling.
- Fixed length lower control arms help center the rear end within the wheel wells.
- Lower control arms feature grease-able polyurethane bushings for durability and performance.
⚠️ 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
If you're looking to swap a 1964-1972 GM A-Body 10-bolt or 12-bolt rear end into your 1978-1988 GM G-Body, like a Monte Carlo, Malibu, El Camino, Regal, Grand National, Grand Prix, or Cutlass, this UMI Performance rear control arm kit is what you need. These aren't just any control arms; they're specifically engineered to connect the G-Body chassis to the A-Body rear end's mounting points correctly. Using factory control arms for this kind of swap can lead to serious issues like rear end bind, an incorrect driveline angle, loss of traction, unwanted vibrations, and even unsafe handling characteristics. This kit ensures all those problems are avoided.
The upper control arms in this kit are designed to mate perfectly with both the G-Body chassis and the A-Body rear end's specific mounting "ears." This precise fit is crucial for proper suspension geometry. The lower control arms are built to a fixed length, which is key for centering the rear end within the G-Body's wheel wells, giving you a clean look and balanced stance. They also come equipped with grease-able polyurethane bushings, which offer a good balance of performance and durability, and feature reinforced sway bar mounting holes for added strength.
This kit includes both the upper and lower rear control arms, providing a complete solution for your rear end swap. By using these purpose-built arms, you're setting yourself up for a much smoother installation and a better-performing, safer vehicle. It's a solid option for anyone serious about getting that A-Body rear end properly situated in their G-Body.
Specifications
- Brand
- UMI Performance
- Manufacturer Part #
- 301519-B
- UPC
- 301519-B
Frequently Asked Questions
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UMI Performance 78-88 GM G-Body 12-Bolt Swap Upper and Lower Control Arm Kit
