UMI Performance Rear Coilover Bracket Kit Control Arm Relocation - Bolt In - Black (1978-1988 GM G-Body) (3048)
Convert your factory rear suspension to a fully adjustable coilover setup while optimizing anti-squat geometry with the UMI Performance Rear Coilover Bracket Kit with Integrated Control Arm Relocation (3048). Engineered specifically for 1978-1988 GM G-Body platforms—including the Buick Grand National/Regal, Chevrolet Monte Carlo, El Camino, Oldsmobile Cutlass, and Pontiac Grand Prix—this 100% bolt-in mounting solution adapts race-proven coilover shocks to your factory rear axle housing without requiring welding or permanent chassis modifications.
Precision laser-cut from heavy-duty 3/16" Made in USA mild steel, these brackets feature multi-position shock mounting holes to fine-tune rear ride height and coilover placement. Additionally, the integrated lower control arm relocation brackets offer three distinct trailing arm mounting positions, allowing drag racers, autocross competitors, and performance street drivers to correct Instant Center geometry on lowered vehicles for improved launch traction and reduced wheel hop. Accommodating standard 1/2" x 1-1/4" racing shock ends, this kit includes upper T-bar reinforcement tabs and all required mounting hardware. Finished in a durable gloss black powder coat, it is 100% designed, tested, and manufactured in Philipsburg, PA, USA.
Features
- 100% bolt-in rear coilover conversion kit designed specifically for factory G-Body rear axle housings
- Integrated control arm relocation features 3 trailing arm mounting holes to optimize Instant Center geometry and anti-squat
- Multi-position lower shock mounts allow precise rear ride height adjustment and shock tuning
- Standard 1/2" x 1-1/4" shock mounting brackets accommodate most aftermarket racing coilovers
- Laser-cut from heavy-duty 3/16" USA mild steel for exact tolerances and superior strength
- Includes upper T-bar reinforcement tabs and heavy-duty installation hardware
- Compatible with optional UMI Rear Shock Tower Reinforcement Brace (P/N 3055) for extra frame rigidity
- Durable gloss black powder coat finish for long-lasting corrosion protection
- 100% designed, tested, manufactured, and raced in Philipsburg, PA – USA
Specifications
- SKU: 3048
- Manufacturer: UMI Performance
- Country of Origin: USA (Philipsburg, PA)
- Material: 3/16" Heavy-Duty Mild Steel
- Mounting Style: 100% Bolt-In
- Shock Mount Size: 1/2" x 1-1/4"
- Trailing Arm Adjustability: 3 Instant Center Relocation Positions
- Finish: Gloss Black Powder Coat
- Weight: N/A
- Dimensions: N/A
- Unit of Measure: Kit (Driver & Passenger Side)
- Hardware: Included
- Modification Required: None (Fits Factory Rear Axle Housings)
Fitment Notes
- Position: Rear Axle / Suspension Lower Mounts.
- Fits 1978-1988 GM G-Body platforms (Buick Regal/Grand National, Chevrolet Monte Carlo, El Camino, Malibu, Oldsmobile Cutlass, Pontiac Grand Prix, Bonneville, GMC Caballero).
- Designed EXCLUSIVELY for factory original GM rear axle housings; may NOT fit aftermarket rear ends (consider kit P/N 3049 for aftermarket axle housings).
- Recommendation: Install 3048 brackets, set desired ride height, and then measure for correct length coilover shocks.
- Clearance Note: Rear coilover shocks may interfere with certain full-length dual exhaust tailpipes.
Fitment
1978 Buick Regal
1979 Buick Regal
1980 Buick Regal
1981 Buick Regal
1982 Buick Regal
1983 Buick Regal
1984 Buick Regal
1985 Buick Regal
1986 Buick Regal
1987 Buick Regal
1978 Chevrolet El Camino
1979 Chevrolet El Camino
1980 Chevrolet El Camino
1981 Chevrolet El Camino
1982 Chevrolet El Camino
1983 Chevrolet El Camino
1984 Chevrolet El Camino
1985 Chevrolet El Camino
1986 Chevrolet El Camino
1987 Chevrolet El Camino
1978 Chevrolet Malibu
1979 Chevrolet Malibu
1980 Chevrolet Malibu
1981 Chevrolet Malibu
1982 Chevrolet Malibu
1983 Chevrolet Malibu
1978 Chevrolet Monte Carlo
1979 Chevrolet Monte Carlo
1980 Chevrolet Monte Carlo
1981 Chevrolet Monte Carlo
1982 Chevrolet Monte Carlo
1983 Chevrolet Monte Carlo
1984 Chevrolet Monte Carlo
1985 Chevrolet Monte Carlo
1986 Chevrolet Monte Carlo
1987 Chevrolet Monte Carlo
1988 Chevrolet Monte Carlo
1978 GMC Caballero
1979 GMC Caballero
1980 GMC Caballero
1981 GMC Caballero
1982 GMC Caballero
1983 GMC Caballero
1984 GMC Caballero
1985 GMC Caballero
1986 GMC Caballero
1987 GMC Caballero
1978 Oldsmobile Cutlass
1979 Oldsmobile Cutlass
1980 Oldsmobile Cutlass
1981 Oldsmobile Cutlass
1982 Oldsmobile Cutlass
1983 Oldsmobile Cutlass
1984 Oldsmobile Cutlass
1985 Oldsmobile Cutlass
1986 Oldsmobile Cutlass
1987 Oldsmobile Cutlass
1988 Oldsmobile Cutlass
1982 Pontiac Bonneville
1983 Pontiac Bonneville
1984 Pontiac Bonneville
1985 Pontiac Bonneville
1986 Pontiac Bonneville
1978 Pontiac Grand Prix
1979 Pontiac Grand Prix
1980 Pontiac Grand Prix
1981 Pontiac Grand Prix
1982 Pontiac Grand Prix
1983 Pontiac Grand Prix
1984 Pontiac Grand Prix
1985 Pontiac Grand Prix
1986 Pontiac Grand Prix
1987 Pontiac Grand Prix
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