UMI Performance 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 250lb
SKU GBF250-1
MPN umiGBF250-1
$1505.64 · Available to order
UMI Performance 78-88 GM G-Body Spring/Shock Lowering Kit 1in Rear 250lb
UMI’s lowering package features four Viking double adjustable shocks, a hybrid front coil-over spring system with 250 lb front springs, and your choice of 1 or 2-inch UMI rear lowering springs. The 250 lb springs are 11" tall and intended exclusively for drag racing applications with significant vehicle weight reduction, providing excellent front-end lift and weight transfer for improved traction. The hybrid front coil-over system allows a 0–3" adjustable drop, while the rear springs offer 1" or 2" lowering options to fine-tune stance. Viking’s shocks provide 19 compression and 19 rebound settings, letting you dial in suspension performance for street, strip, or cornering with simple knob adjustments—no tools required. The bolt-in design eliminates the need for welding or a spring compressor for the front, and optional Spanner Wrench and Thrust Bearing Kits make height adjustments smoother. This setup is purpose-built for drag racing performance and is not recommended for street handling applications.
| Years | Make | Model | Submodel | Drive |
|---|---|---|---|---|
| 1984–1986 | Pontiac | Bonneville | LE | — |
| 1978–1984 | Oldsmobile | Cutlass Calais | Base | — |
| 1988 | Oldsmobile | Cutlass Supreme | SL | — |
| 1980–1981 | Oldsmobile | Cutlass Cruiser | Brougham | — |
| 1985–1987 | Oldsmobile | Cutlass Salon | Base | — |
| 1982 | Buick | Regal | Limited Turbo | — |
| 1988 | Oldsmobile | Cutlass Ciera | International | — |
| 1981 | GMC | Caballero | Royal Knight | — |
| 1979 | Oldsmobile | Cutlass | Vista Cruiser Brougham | — |
| 1978–1980 | Chevrolet | Malibu | Classic Estate | — |
| 1978–1980 | Pontiac | Grand Prix | SJ | — |
| 1983 | Chevrolet | Monte Carlo | CL | — |
| 1983 | Oldsmobile | Cutlass Ciera | ES | — |
| 1978–1981 | Chevrolet | Monte Carlo | Landau | — |
| 1981–1986 | Chevrolet | El Camino | Conquista | — |
| 1981 | GMC | Caballero | Conquista | — |
| 1978–1987 | Pontiac | Grand Prix | Base | — |
| 1978–1987 | Chevrolet | El Camino | SS | — |
| 1978 | Chevrolet | El Camino | Conquista | — |
| 1978–1983 | Pontiac | Grand Prix | LJ | — |
| 1979 | Oldsmobile | Cutlass Salon | Hurst | — |
| 1985–1986 | Oldsmobile | Cutlass Ciera | ES | — |
| 1981–1987 | Pontiac | Grand Prix | Brougham | — |
| 1979 | Chevrolet | Malibu | Landau | — |
| 1978–1987 | Chevrolet | El Camino | Base | — |
| 1983–1986 | Buick | Regal | T-Type | — |
| 1984–1987 | Buick | Regal | Grand National | — |
| 1978–1981 | Chevrolet | Malibu | Base | — |
| 1986–1988 | Oldsmobile | Cutlass Ciera | S | — |
| 1980 | Chevrolet | Monte Carlo | Sport | — |
| 1979 | Chevrolet | Malibu | Police | — |
| 1988 | Oldsmobile | Cutlass Supreme | Indy 500 Pace Car | — |
| 1979–1980 | Chevrolet | Malibu | Classic Sport | — |
| 1978–1987 | Buick | Regal | Limited | — |
| 1978–1987 | Oldsmobile | Cutlass Supreme | Brougham | — |
| 1986–1988 | Chevrolet | Monte Carlo | LS | — |
| 1988 | Oldsmobile | Cutlass Supreme | Classic | — |
| 1982–1983 | Oldsmobile | Cutlass Ciera | Base | — |
| 1980–1981 | Oldsmobile | Cutlass | Brougham | — |
| 1986–1988 | Oldsmobile | Cutlass Ciera | SL | — |
| 1984–1987 | Pontiac | Grand Prix | LE | — |
| 1979–1980 | Chevrolet | Malibu | Sport | — |
| 1978–1980 | GMC | Caballero | Laredo | — |
| 1988 | Oldsmobile | Cutlass Ciera | Base | — |
| 1985–1987 | Oldsmobile | Cutlass Ciera | GT | — |
| 1984–1985 | Oldsmobile | Cutlass Ciera | Cruiser LS | — |
| 1983–1984 | Oldsmobile | Cutlass Calais | Hurst | — |
| 1982–1986 | Pontiac | Bonneville | Base | — |
| 1978–1980 | Oldsmobile | Cutlass Salon | Base | — |
| 1978–1981 | Chevrolet | Malibu | Classic Landau | — |
| 1980 | Oldsmobile | Cutlass | Base | — |
| 1987 | Oldsmobile | Cutlass Supreme | 442 | — |
| 1980–1981 | Oldsmobile | Cutlass | LS | — |
| 1981–1988 | Chevrolet | Monte Carlo | Base | — |
| 1978–1979 | Oldsmobile | Cutlass | Vista Cruiser | — |
| 1981 | Oldsmobile | Cutlass Supreme | LS | — |
| 1978–1983 | Chevrolet | Malibu | Classic | — |
| 1988 | Oldsmobile | Cutlass Supreme | International | — |
| 1985–1986 | Oldsmobile | Cutlass Ciera | Holiday | — |
| 1978–1979 | Oldsmobile | Cutlass Salon | 442 | — |
| 1982–1983 | Buick | Regal | Estate Wagon | — |
| 1978–1982 | Buick | Regal | Sport | — |
| 1978–1987 | GMC | Caballero | Diablo | — |
| 1980–1983 | Oldsmobile | Cutlass Cruiser | Base | — |
| 1982–1988 | Oldsmobile | Cutlass Ciera | Brougham | — |
| 1979–1980 | Chevrolet | Malibu | Estate | — |
| 1988 | Oldsmobile | Cutlass Supreme | Classic Brougham | — |
| 1982–1986 | Pontiac | Bonneville | Brougham | — |
| 1983–1988 | Chevrolet | Monte Carlo | SS | — |
| 1978 | Chevrolet | Monte Carlo | Sport | — |
| 1979–1981 | Chevrolet | El Camino | Royal Knight | — |
| 1982–1988 | Oldsmobile | Cutlass Ciera | LS | — |
| 1978–1980 | Oldsmobile | Cutlass Salon | Brougham | — |
| 1987 | Buick | Regal | GNX | — |
| 1978–1988 | Oldsmobile | Cutlass Supreme | Base | — |
| 1978–1987 | GMC | Caballero | Base | — |
| 1978–1987 | Buick | Regal | Base | — |
| 1979 | Chevrolet | Monte Carlo | Base | — |
| 1985–1986 | Oldsmobile | Cutlass Salon | 442 | — |
| 1985 | Oldsmobile | Cutlass Supreme | LS | — |
| 1981–1986 | GMC | Caballero | Amarillo | — |
| Category | Suspension |
|---|---|
| Sub-Category | Coilovers |
| CARB Approved | Yes |
| Prop 65 Warning | Y |
| Special Order | Yes |
Related
- All UMI Performance parts
- Suspension
- Pontiac Bonneville parts
- Oldsmobile Cutlass Calais parts
- Oldsmobile Cutlass Supreme parts
- Oldsmobile Cutlass Cruiser parts
- Oldsmobile Cutlass Salon parts
- Buick Regal parts
- Oldsmobile Cutlass Ciera parts
- GMC Caballero parts
- Oldsmobile Cutlass parts
- Chevrolet Malibu parts
- Pontiac Grand Prix parts
- Chevrolet Monte Carlo parts