Installation Pictures
4057-X – 1964-1972 GM A-Body Coilover Kit, Rear, 2-3″ Lowering
$969.99
⚠ See fitment note
PRODUCT DESCRIPTION
UMI’s rear coilover kit allows for ride height adjustments ranging from a -2" to -3" drop, along with spring rate and damping modifications. The kit includes a reinforced upper mount that bolts directly in place (requiring one additional hole to be drilled) and accommodates a true 2-1/2” racing coilover with a double-shear mount. It also features FEA-designed reinforced lower brackets that bolt directly over the stock rear lower control arm mounts and utilize the existing lower shock hole(s). The 2-hole trailing arm height adjustment enables fine-tuning of the instant center location for drag launches or auto-x/road race rear steer tuning. The Viking Performance shock offers 19-way adjustments for both compression and rebound. The 2-1/2” coilover springs come in various rates suitable for drag use, street driving, and auto-x/road racing. This kit is 100% designed, manufactured, and tested in Philipsburg, PA, USA, using US materials.
Please note that this kit is intended for a -2 to -3" Pro-Tour style lowering and is compatible only with factory GM axle housings. It may not fit aftermarket housings such as Quick Performance, Currie, or Moser. Optional add-ons like thrust bearings and a spanner wrench are recommended for easier adjustments. A shock tower brace for additional chassis reinforcement is also available separately. This kit is meant solely for lowering purposes, and welding may be necessary for drag use on vehicles running 10.50 or faster.
Fitment Note: For stock axles only. Rear shocks may not clear all exhaust tail pipes.
PRODUCT FEATURES
- Ride height adjustment from -2" to -3" drop
- Spring rate and damping adjustments
- Trailing arm adjustment for fine-tuning of instant center
- Reinforced upper mount with direct bolt-in installation
- Holds a true 2-1/2" racing coilover with double-shear mount
- FEA designed reinforced lower brackets bolt directly over stock rear lower control arm mounts
- 2-hole trailing arm height adjustment for fine-tuning of instant center location
- Viking Performance shock with 19-way adjustable compression and rebound
- 2-1/2" coilover springs available in different rates
- 100% designed, manufactured, and raced out of Philipsburg, PA-USA
- 3 Spring Ratings Available
- Viking Warrior Shocks
- 19 Compression & Rebound Adjustments
This Product Features
Designed & Manufactured in the USA
Durable Powder-Coat
Precision Laser Cut Components
Precision Welds
About Viking Performance
Viking Performance, Inc. specializes in high-performance double adjustable shock absorbers and related products. Founded in 2011 by experienced racing enthusiasts, the company identified a gap in the market for affordable double adjustable shocks, allowing customers to optimize their vehicle's ride quality by independently tuning compression and rebound settings. By focusing solely on these products, Viking keeps prices competitive with single adjustable shocks, offering better performance without unnecessary costs.
Viking conducts all aspects of design, research, and manufacturing in-house, ensuring quick responses to market changes. The company has received prestigious awards like SEMA's Best Engineered Award and has expanded its product line to include various shock types, such as patented race-only Crusader shocks and lightweight aluminum struts. With a commitment to value and quality, Viking aims to provide exceptional products for racing and performance enthusiasts at accessible prices.
| Fitment | |
|---|---|
| Direct Bolt-On |
No |
| Platform | , |
| Manufacturer | , |
| Modifications |
Drilling |
| UOM |
Kit |
| Finish |
Anodized ,Powder Coat |
| Hardware |
Included |
| Spring Rating |
175lb ,225lb ,250lb |
Why Choose
UMI Performance
21 Years In The Industry
Play Video
North American Raw Materials
Proudly partnering with leading USA steel suppliers, we source the finest North American mined and milled steel
Precision Bent DOM Tubing
Machine-guided DOM tubing bends maintain correct geometry while maintaining material strength.
Laser Cut Plating
We take North-American sourced plating and precision-cut each component with the latest laser-cutting technology.
Durable Powder Coating
Each finished part is properly prepped and coated with high quality Tiger Dry Lac powder coat, providing a tough long-lasting finish.
Consistent Welds
Our highly-skilled welders and robotic-welders provide consistent welds and ultimate part penetration.
100% USA Made
We take pride in providing 100% USA-Manufactured suspension components.
Shipping Guidelines
Flat Rate Shipping ($11.99) is only offered on Retail orders over $149 shipped via Ground in the Continental United States.
All International customers are responsible for any applicable duties and/or taxes incurred on your shipment upon delivery.
Return Information
All returns are subject to the authorization of UMI Performance, Inc. Please email [email protected] for a Returned Merchandise Authorization (RMA) number. Our Sales team will either authorize or deny the request for return at its discretion. Any product returned without an issued RMA number will not be credited. All returns must be made within 30 days of delivery, be in new condition, be in original sealed packaging and include the RMA number on the outside of the packaging. No exceptions. All products and their packaging must be in new and unopened condition. Products that have been altered, installed, or modified are not returnable. All shipping costs for returns are the responsibility of the customer. All returns are subject to a 20% restocking fee as well as the original shipping charges that UMI Performance may have incurred while shipping your order.
Due to the majority of Viking products being drop shipped, we can not offer returns on any Viking products. If you purchase a Viking product be sure it fits your application. If you need technical assistance prior to placing order please contact [email protected]
This '4057-X - 1964-1972 GM A-Body Coilover Kit, Rear, 2-3" Lowering' fits the following platforms:
Fitment Note: For stock axles only. Rear shocks may not clear all exhaust tail pipes.
1964-1972 GM A-Body
- 1965-1967 Buick Gran Sport
- 1970-1972 Buick GS
- 1968-1969 Buick GS 350
- 1968-1969 Buick GS 400
- 1970-1972 Buick GS 455
- 1964-1972 Buick Skylark
- 1964-1969 Buick Special
- 1964-1972 Buick Sportwagon
- 1964-1972 Chevrolet Chevelle
- 1964-1972 Chevrolet El Camino
- 1964-1967 Chevrolet Malibu
- 1970-1972 Chevrolet Monte Carlo
- 1964-1971 Oldsmobile 442
- 1964-1972 Oldsmobile Cutlass
- 1964-1972 Oldsmobile F85
- 1964-1972 Oldsmobile Vista Cruiser
- 1969-1972 Pontiac Grand Prix
- 1964-1972 Pontiac GTO
- 1964-1970 Pontiac Tempest
- 1964-1972 Pontiac Lemans
- 1971-1972 GMC Sprint
This 4057-X - 1964-1972 GM A-Body Coilover Kit, Rear, 2-3" Lowering fits the following vehicles:
Buick
Gran Sport
- 1965 Buick Gran Sport
- 1966 Buick Gran Sport
- 1967 Buick Gran Sport
GS
- 1970 Buick GS
- 1971 Buick GS
- 1972 Buick GS
GS 350
- 1968 Buick GS 350
- 1969 Buick GS 350
GS 400
- 1968 Buick GS 400
- 1969 Buick GS 400
GS 455
- 1970 Buick GS 455
- 1971 Buick GS 455
- 1972 Buick GS 455
Skylark
- 1964 Buick Skylark
- 1965 Buick Skylark
- 1966 Buick Skylark
- 1967 Buick Skylark
- 1968 Buick Skylark
- 1969 Buick Skylark
- 1970 Buick Skylark
- 1971 Buick Skylark
- 1972 Buick Skylark
Special
- 1964 Buick Special
- 1965 Buick Special
- 1966 Buick Special
- 1967 Buick Special
- 1968 Buick Special
- 1969 Buick Special
Sportwagon
- 1964 Buick Sportwagon
- 1965 Buick Sportwagon
- 1966 Buick Sportwagon
- 1967 Buick Sportwagon
- 1968 Buick Sportwagon
- 1969 Buick Sportwagon
- 1970 Buick Sportwagon
- 1971 Buick Sportwagon
- 1972 Buick Sportwagon
Chevrolet
Chevelle
- 1964 Chevrolet Chevelle
- 1965 Chevrolet Chevelle
- 1966 Chevrolet Chevelle
- 1967 Chevrolet Chevelle
- 1968 Chevrolet Chevelle
- 1969 Chevrolet Chevelle
- 1970 Chevrolet Chevelle
- 1971 Chevrolet Chevelle
- 1972 Chevrolet Chevelle
El Camino
- 1964 Chevrolet El Camino
- 1965 Chevrolet El Camino
- 1966 Chevrolet El Camino
- 1967 Chevrolet El Camino
- 1968 Chevrolet El Camino
- 1969 Chevrolet El Camino
- 1970 Chevrolet El Camino
- 1971 Chevrolet El Camino
- 1972 Chevrolet El Camino
Malibu
- 1964 Chevrolet Malibu
- 1965 Chevrolet Malibu
- 1966 Chevrolet Malibu
- 1967 Chevrolet Malibu
Monte Carlo
- 1970 Chevrolet Monte Carlo
- 1971 Chevrolet Monte Carlo
- 1972 Chevrolet Monte Carlo
Oldsmobile
442
- 1964 Oldsmobile 442
- 1965 Oldsmobile 442
- 1966 Oldsmobile 442
- 1967 Oldsmobile 442
- 1968 Oldsmobile 442
- 1969 Oldsmobile 442
- 1970 Oldsmobile 442
- 1971 Oldsmobile 442
Cutlass
- 1964 Oldsmobile Cutlass
- 1965 Oldsmobile Cutlass
- 1966 Oldsmobile Cutlass
- 1967 Oldsmobile Cutlass
- 1968 Oldsmobile Cutlass
- 1969 Oldsmobile Cutlass
- 1970 Oldsmobile Cutlass
- 1971 Oldsmobile Cutlass
- 1972 Oldsmobile Cutlass
F85
- 1964 Oldsmobile F85
- 1965 Oldsmobile F85
- 1966 Oldsmobile F85
- 1967 Oldsmobile F85
- 1968 Oldsmobile F85
- 1969 Oldsmobile F85
- 1970 Oldsmobile F85
- 1971 Oldsmobile F85
- 1972 Oldsmobile F85
Vista Cruiser
- 1964 Oldsmobile Vista Cruiser
- 1965 Oldsmobile Vista Cruiser
- 1966 Oldsmobile Vista Cruiser
- 1967 Oldsmobile Vista Cruiser
- 1968 Oldsmobile Vista Cruiser
- 1969 Oldsmobile Vista Cruiser
- 1970 Oldsmobile Vista Cruiser
- 1971 Oldsmobile Vista Cruiser
- 1972 Oldsmobile Vista Cruiser
Pontiac
Grand Prix
- 1969 Pontiac Grand Prix
- 1970 Pontiac Grand Prix
- 1971 Pontiac Grand Prix
- 1972 Pontiac Grand Prix
GTO
- 1964 Pontiac GTO
- 1965 Pontiac GTO
- 1966 Pontiac GTO
- 1967 Pontiac GTO
- 1968 Pontiac GTO
- 1969 Pontiac GTO
- 1970 Pontiac GTO
- 1971 Pontiac GTO
- 1972 Pontiac GTO
Tempest
- 1964 Pontiac Tempest
- 1965 Pontiac Tempest
- 1966 Pontiac Tempest
- 1967 Pontiac Tempest
- 1968 Pontiac Tempest
- 1969 Pontiac Tempest
- 1970 Pontiac Tempest
Lemans
- 1964 Pontiac Lemans
- 1965 Pontiac Lemans
- 1966 Pontiac Lemans
- 1967 Pontiac Lemans
- 1968 Pontiac Lemans
- 1969 Pontiac Lemans
- 1970 Pontiac Lemans
- 1971 Pontiac Lemans
- 1972 Pontiac Lemans
GMC
Sprint
- 1971 GMC Sprint
- 1972 GMC Sprint
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