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UMI’s bolt-in rear coilover kit allows full ride height, spring rate and damping adjustments, while trailing arm adjustment enables fine tuning of instant center. The reinforced upper mount is a direct bolt-in (requiring one additional hole to be drilled) and holds a true 2-1/2” racing coilover with double-shear mount. The FEA designed reinforced lower brackets bolt directly over the stock rear lower control arm mounts, utilizing the existing lower shock hole(s) (may requiring drilling of additional hole depending on factory configuration). The 2-hole trailing arm height adjustment enables fine tuning of instant center location for drag launch or auto-x/road race rear steer tuning. 100% designed, manufactured and raced out of Philipsburg, PA-USA and always US materials.
4057 -1964-1972 GM A-Body Rear Coilover Bracket Kit
Coilover Mount
| Part Number | 4057 |
|---|---|
| Part Type | Coilover Adjustable Spring Lowering Kit |
| HS Code | 8708807000 |
| Country of Origin | US |
| Package | Qty | Weight | Dimensions | GTIN |
|---|---|---|---|---|
| Box | 1 | 12.0 lb | L 14.0 x W 6.0 x H 6.0 Inches |
| Adjustable | Yes |
|---|---|
| California Proposition 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Color | Black |
| Finish | Black Powdercoated |
| Grade Type | Performance |
| Material | Aluminum, Steel |
| Mounting Hardware Included | Yes |
| Mounting Method | Bolt On |
| Pre-Greased | No |
| Universal Or Specific Fit | Specific |
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1970-1972 | Buick | GS | |
| 1968-1969 | Buick | GS 350 | |
| 1968-1969 | Buick | GS 400 | |
| 1970-1972 | Buick | GS 455 | |
| 1965-1967 | Buick | Gran Sport | |
| 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 | |
| 1971-1972 | GMC | Sprint | |
| 1964-1971 | Oldsmobile | 442 | |
| 1964-1972 | Oldsmobile | Cutlass | |
| 1964-1972 | Oldsmobile | Vista Cruiser | |
| 1964-1972 | Pontiac | GTO | |
| 1969-1972 | Pontiac | Grand Prix | |
| 1964-1972 | Pontiac | LeMans | |
| 1964-1970 | Pontiac | Tempest |