UMI Performance 1" Lowering Spring Kit (1978-1988 GM G-Body) (3050)
Transform your vehicle's handling performance, eliminate high-speed float, and establish a aggressive stance with the UMI Performance 1" Lowering Spring Kit (3050). 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 premium four-spring lowering set was developed in direct collaboration with a top Sprint Cup chassis engineer to deliver optimal suspension geometry, superior cornering flat-response, and a firm yet comfortable street ride.
Manufactured in the USA using ultra-high-grade spring wire materials, the front lowering springs are cold-wound from 5160 CrSi premium wire featuring a 600 lb/in linear spring rate. The matching rear springs are constructed from 9254 CrSi wire with a 130 lb/in linear rate. Together, these tuned linear rates lower vehicle center of gravity by approximately 1" on standard Small Block Chevrolet (SBC) and LS engine configurations while completely eliminating the vague, floating feel characteristic of factory G-Body suspensions. Finished in a durable black powder coat to resist corrosion and chipping, these springs are the ideal foundation for autocross, Pro-Touring, and high-performance street cruising.
Features
- Lowers vehicle center of gravity approximately 1" for improved high-speed stability and performance stance
- Developed in conjunction with a Sprint Cup chassis engineer for optimized handling and suspension dynamics
- Front springs engineered from 5160 CrSi wire with a 600 lb/in linear spring rate
- Rear springs engineered from 9254 CrSi wire with a 130 lb/in linear spring rate
- Linear spring rates deliver predictable handling response and eliminate floating sensation without harshness
- Dramatically reduces body roll and dive under heavy braking or aggressive cornering
- Ideal for Pro-Touring, autocross, street performance, and spirited corner carving
- Finished in a durable black powder coat for long-lasting corrosion protection
- 100% designed, tested, and manufactured in the USA
Specifications
- SKU: 3050
- Manufacturer: UMI Performance
- Country of Origin: USA
- Front Spring Rate: 600 lb/in (Linear Rate - 5160 CrSi Wire)
- Rear Spring Rate: 130 lb/in (Linear Rate - 9254 CrSi Wire)
- Lowering Height: Approximately 1.00" (SBC / LS Setups)
- Finish: Black Powder Coat
- Set Quantity: 4 Springs (2 Front, 2 Rear)
- Weight: N/A
- Dimensions: N/A
- Modification Required: None (Direct Drop-In)
Fitment Notes
- Position: Front & Rear Coil Springs (Full Set).
- 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 for 1" lowering on standard Small Block Chevy (SBC) and LS engine setups.
- V6 Turbo Buick / Grand National models may sit slightly higher due to lighter front engine weight (spring trimming may be required to achieve desired height).
- Big Block Chevy (BBC) applications will sit approximately 1/4" lower in front, creating an aggressive nose-down rake.
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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