Specifications
- Brand
- UMI Performance
- Part #
- 4057-225

UMI Performance 64-72 GM A-Body Rear Coilover Kit (225LB Spring Rate)
$1251.02
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UMI Performance 64-72 GM A-Body Rear Coilover Kit (225LB Spring Rate). Get adjustable ride height and damping for your classic.
Key Features
- Fits 1964-1972 GM A-Body vehicles.
- Includes UMI Performance rear coilovers with 225lb springs for street use.
- Viking Performance shocks offer 19-way adjustable compression and rebound.
- Reinforced upper mount requires drilling one additional hole for double-shear mounting.
- FEA-designed lower brackets bolt to stock control arm mounts.
- Two-position trailing arm height adjustment allows for instant center tuning.
⚠️ 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 includes a pair of UMI Performance rear coilovers with 225lb springs, reinforced upper and lower mounting brackets, and Viking Performance adjustable shocks. It's designed to fit a wide range of 1964-1972 GM A-Body vehicles, including popular models like the Chevrolet Chevelle, Buick Skylark, and Pontiac GTO. This system allows for full adjustment of ride height, spring rate, and damping, giving you the flexibility to tune your suspension for different driving styles.
The upper mount is a direct bolt-in with a provision for one additional hole, creating a true double-shear mount for the 2-1/2” racing coilover. UMI’s FEA-designed lower brackets bolt directly onto the stock rear lower control arm mounts, using existing shock holes and potentially requiring an extra hole depending on your car's original setup. The trailing arm height adjustment feature, with two distinct positions, lets you fine-tune the instant center location for optimal performance whether you're setting up for drag launches or road racing. The included Viking Performance shocks offer 19-way adjustability for both compression and rebound, ensuring you can dial in the perfect ride for any situation. This kit is intended for a 2-3 inch Pro-Tour style lowering.
This kit is manufactured in the USA using US materials and is designed for factory GM axle housings only. It's important to note that rear shocks may not clear all exhaust tailpipes, and this kit is not compatible with aftermarket axle housings from companies like Quick Performance, Currie, or Moser. For optimal results, always refer to the manufacturer's installation instructions.
Specifications
- Brand
- UMI Performance
- Manufacturer Part #
- 4057-225
Frequently Asked Questions
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UMI Performance 64-72 GM A-Body Rear Coilover Kit (225LB Spring Rate)
