UMI 64-72 GM A-Body Coil Over Conversion Brackets Kit -2in to -3in Ride Height - 175lb Spring Rate
Why this price?
$1,235.81 is MSRP, the lowest price UMI Performance lets us list it at. Additionally, Pro members get $37.07 back on this part.
$1,235.81 − $37.07 = $1,198.74
Special Order
This part is still available to order. Once you place your order, we’ll submit it directly to UMI Performance, and they’ll ship it straight to you.
Delivery times can vary depending on the brand, so we can’t guarantee an exact arrival date. What we can guarantee is that we’ll stay on top of your order, monitor its progress, and keep you updated until it reaches your door.
Special-order items are typically not kept in stock by most retailers. By ordering through us, your order is placed directly with UMI Performance, assuring you get the part as quickly as possible.
Want to get an estimated delivery timeframe before ordering? Contact us through our contact page, and we’ll be happy to find out for you.
Not sure it fits? Read our tips.
Fitment tips
Fitment can come down to more than year, make and model. Sometimes the sub-model decides, so start with the fitment table below.
- Drive type. If your car is all-wheel drive, make sure the part is for all-wheel drive, not rear-wheel drive.
- Engine size. For engine parts, make sure the engine size on the product matches your engine.
- Transmission. Manual and automatic cars often take different parts.
- Body style. Sedan or hatch, two-door or four-door, cab and bed length on trucks.
Manufacturer data can sometimes have imperfections. Still not sure? We are happy to help.
Send us a message and we will confirm the fit.
Couldn't load pickup availability
The UMI bolt-in rear coilover kit provides comprehensive adjustments for ride height, spring rate, and damping, in addition to enabling trailing arm adjustments for precise calibration of the instant center. This kit is equipped with a fortified upper mount, specifically designed to accommodate a 2-1/2” racing coilover with a double-shear configuration. The lower brackets, engineered through Finite Element Analysis (FEA), are reinforced and are designed to be bolted directly onto the existing Quick Performance rear lower control arm mounts. These brackets also feature an adjustment mechanism for trailing arm height, facilitating the tuning of the instant center location using the 3 available positions. This product is manufactured and tested in Philipsburg, Pennsylvania, utilizing materials sourced from the United States.We advise that the brackets be installed initially and that measurements be taken from center to center at ride height to guarantee the precise identification of shock part numbers. Regarding compatibility, this kit is designed for direct installation with a Quick Performance rear.
- 2-hole trailing arm height adjustment for instant center tuning
- Reinforced upper mount with a true 2-1/2” racing coilover
- Trailing arm adjustment for fine tuning of instant center
- Designed, manufactured, and raced in Philipsburg, PA, USA
- Full ride height, spring rate, and damping adjustments
- FEA designed reinforced lower brackets
- Welding required for drag use
- Made with 100% US materials
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1964-1967 | Chevrolet | Chevelle | 300 |
| 1967 | Chevrolet | Chevelle | concours |
| 1964-1966 | Chevrolet | Chevelle | malibu |
| 1968 | Chevrolet | Chevelle | nomad |
| 1964-1966 | Chevrolet | El Camino | |
| 1968-1971 | Chevrolet | El Camino | |
| 1971-1972 | GMC | Sprint | base |
| 1972 | GMC | Sprint | custom |
| 1964-1972 | Pontiac | GTO | base |
| 1970-1971 | Pontiac | GTO | the |
| 1969-1972 | Pontiac | Grand Prix | |
| 1964-1969 | Pontiac | LeMans | base |
| 1972 | Pontiac | LeMans | luxury |
| 1969-1970 | Pontiac | LeMans | safari |
| 1972 | Pontiac | LeMans | sport |
| 1964-1970 | Pontiac | Tempest | base |
| 1964-1969 | Pontiac | Tempest | custom |
| 1970 | Pontiac | Tempest | gt |
| 1964-1969 | Pontiac | Tempest | safari |
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