UMI Performance 1" Lowering Spring/Shock Kit — Fits 1978-1988 GM G-Body

SKU: UMISS103050G
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About UMI Performance

UMI Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full UMI Performance lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

UMI Performance 1" Lowering Spring & Shock Kit for 1978-1988 GM G-Body

Transform the stance and handling of your classic 1978-1988 GM G-Body with the UMI Performance 1-inch Lowering Spring and Shock Kit. This carefully curated kit is designed to provide a noticeable drop, improving your vehicle's center of gravity for better cornering performance, while maintaining a comfortable ride quality suitable for street use. UMI Performance is renowned for its commitment to quality and performance in the muscle car aftermarket.

Kit Features and Benefits:

  • 1-Inch Drop: Achieve an aggressive, sportier stance by lowering the vehicle's ride height by a full inch, enhancing its visual appeal.
  • Improved Handling: The combination of performance springs and matched shocks reduces body roll and sharpens steering response, making your G-Body feel more planted and agile.
  • Optimized Ride Quality: Engineered to provide a firm yet comfortable ride, balancing performance enhancements with daily drivability.
  • Direct Fitment: Designed as a direct replacement for stock components on a wide range of 1978-1988 GM G-Body models, ensuring a hassle-free installation.
  • Durable Components: UMI Performance utilizes high-quality materials for both springs and shocks, ensuring longevity and consistent performance.

This kit is perfect for enthusiasts looking to upgrade their classic G-Body's suspension for a more modern driving experience. Whether you're cruising the streets or participating in weekend drives, the UMI Performance kit offers a significant improvement in both aesthetics and dynamic performance. Fits popular models like the Buick Regal, Chevrolet El Camino and Malibu, Oldsmobile Cutlass, and Pontiac Grand Prix/LeMans.

Upgrade your classic GM G-Body's suspension. Find the UMI Performance Lowering Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Base
1978-1988 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1988 Buick Regal Custom
1978 Chevrolet El Camino Conquista
1978-1984 Chevrolet El Camino Base
1978-1984 Chevrolet El Camino SS
1979-1981 Chevrolet El Camino Royal Knight
1981-1984 Chevrolet El Camino Conquista
1978-1980 Chevrolet Malibu Classic Estate
1978-1981 Chevrolet Malibu Classic Landau
1978-1981 Chevrolet Malibu Base
1979 Chevrolet Malibu Landau
1979 Chevrolet Malibu Police
1979-1980 Chevrolet Malibu Classic Sport
1979-1980 Chevrolet Malibu Estate
1978 Chevrolet Monte Carlo Sport
1978-1981 Chevrolet Monte Carlo Landau
1979 Chevrolet Monte Carlo Base
1980 Chevrolet Monte Carlo Sport
1981-1988 Chevrolet Monte Carlo Base
1983 Chevrolet Monte Carlo CL
1986-1988 Chevrolet Monte Carlo LS
1978-1979 Oldsmobile Cutlass Vista Cruiser
1979 Oldsmobile Cutlass Vista Cruiser Brougham
1980 Oldsmobile Cutlass Base
1980-1981 Oldsmobile Cutlass Brougham
1980-1981 Oldsmobile Cutlass LS
1978-1980 Pontiac Grand Prix SJ
1978-1983 Pontiac Grand Prix LJ
1978-1988 Pontiac Grand Prix Base
1984-1988 Pontiac Grand Prix LE
1988 Pontiac Grand Prix SE
1978-1981 Pontiac LeMans Base
1988 Pontiac LeMans Aerocoupe
1988 Pontiac LeMans Aerocoupe YL
1988 Pontiac LeMans Base
1988 Pontiac LeMans SE
1988 Pontiac LeMans Value Leader

Product Details

Product Description
Part Numbers
Sizing & Fit

About UMI Performance

UMI Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full UMI Performance lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

UMI Performance 1" Lowering Spring & Shock Kit for 1978-1988 GM G-Body

Transform the stance and handling of your classic 1978-1988 GM G-Body with the UMI Performance 1-inch Lowering Spring and Shock Kit. This carefully curated kit is designed to provide a noticeable drop, improving your vehicle's center of gravity for better cornering performance, while maintaining a comfortable ride quality suitable for street use. UMI Performance is renowned for its commitment to quality and performance in the muscle car aftermarket.

Kit Features and Benefits:

  • 1-Inch Drop: Achieve an aggressive, sportier stance by lowering the vehicle's ride height by a full inch, enhancing its visual appeal.
  • Improved Handling: The combination of performance springs and matched shocks reduces body roll and sharpens steering response, making your G-Body feel more planted and agile.
  • Optimized Ride Quality: Engineered to provide a firm yet comfortable ride, balancing performance enhancements with daily drivability.
  • Direct Fitment: Designed as a direct replacement for stock components on a wide range of 1978-1988 GM G-Body models, ensuring a hassle-free installation.
  • Durable Components: UMI Performance utilizes high-quality materials for both springs and shocks, ensuring longevity and consistent performance.

This kit is perfect for enthusiasts looking to upgrade their classic G-Body's suspension for a more modern driving experience. Whether you're cruising the streets or participating in weekend drives, the UMI Performance kit offers a significant improvement in both aesthetics and dynamic performance. Fits popular models like the Buick Regal, Chevrolet El Camino and Malibu, Oldsmobile Cutlass, and Pontiac Grand Prix/LeMans.

Upgrade your classic GM G-Body's suspension. Find the UMI Performance Lowering Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Base
1978-1988 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1988 Buick Regal Custom
1978 Chevrolet El Camino Conquista
1978-1984 Chevrolet El Camino Base
1978-1984 Chevrolet El Camino SS
1979-1981 Chevrolet El Camino Royal Knight
1981-1984 Chevrolet El Camino Conquista
1978-1980 Chevrolet Malibu Classic Estate
1978-1981 Chevrolet Malibu Classic Landau
1978-1981 Chevrolet Malibu Base
1979 Chevrolet Malibu Landau
1979 Chevrolet Malibu Police
1979-1980 Chevrolet Malibu Classic Sport
1979-1980 Chevrolet Malibu Estate
1978 Chevrolet Monte Carlo Sport
1978-1981 Chevrolet Monte Carlo Landau
1979 Chevrolet Monte Carlo Base
1980 Chevrolet Monte Carlo Sport
1981-1988 Chevrolet Monte Carlo Base
1983 Chevrolet Monte Carlo CL
1986-1988 Chevrolet Monte Carlo LS
1978-1979 Oldsmobile Cutlass Vista Cruiser
1979 Oldsmobile Cutlass Vista Cruiser Brougham
1980 Oldsmobile Cutlass Base
1980-1981 Oldsmobile Cutlass Brougham
1980-1981 Oldsmobile Cutlass LS
1978-1980 Pontiac Grand Prix SJ
1978-1983 Pontiac Grand Prix LJ
1978-1988 Pontiac Grand Prix Base
1984-1988 Pontiac Grand Prix LE
1988 Pontiac Grand Prix SE
1978-1981 Pontiac LeMans Base
1988 Pontiac LeMans Aerocoupe
1988 Pontiac LeMans Aerocoupe YL
1988 Pontiac LeMans Base
1988 Pontiac LeMans SE
1988 Pontiac LeMans Value Leader

Product Details

Product Description

About UMI Performance

UMI Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full UMI Performance lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

UMI Performance 1" Lowering Spring & Shock Kit for 1978-1988 GM G-Body

Transform the stance and handling of your classic 1978-1988 GM G-Body with the UMI Performance 1-inch Lowering Spring and Shock Kit. This carefully curated kit is designed to provide a noticeable drop, improving your vehicle's center of gravity for better cornering performance, while maintaining a comfortable ride quality suitable for street use. UMI Performance is renowned for its commitment to quality and performance in the muscle car aftermarket.

Kit Features and Benefits:

  • 1-Inch Drop: Achieve an aggressive, sportier stance by lowering the vehicle's ride height by a full inch, enhancing its visual appeal.
  • Improved Handling: The combination of performance springs and matched shocks reduces body roll and sharpens steering response, making your G-Body feel more planted and agile.
  • Optimized Ride Quality: Engineered to provide a firm yet comfortable ride, balancing performance enhancements with daily drivability.
  • Direct Fitment: Designed as a direct replacement for stock components on a wide range of 1978-1988 GM G-Body models, ensuring a hassle-free installation.
  • Durable Components: UMI Performance utilizes high-quality materials for both springs and shocks, ensuring longevity and consistent performance.

This kit is perfect for enthusiasts looking to upgrade their classic G-Body's suspension for a more modern driving experience. Whether you're cruising the streets or participating in weekend drives, the UMI Performance kit offers a significant improvement in both aesthetics and dynamic performance. Fits popular models like the Buick Regal, Chevrolet El Camino and Malibu, Oldsmobile Cutlass, and Pontiac Grand Prix/LeMans.

Upgrade your classic GM G-Body's suspension. Find the UMI Performance Lowering Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1978-1982 Buick Regal Sport
1978-1987 Buick Regal Base
1978-1988 Buick Regal Limited
1982 Buick Regal Limited Turbo
1982-1983 Buick Regal Estate Wagon
1984-1987 Buick Regal Grand National
1987 Buick Regal GNX
1988 Buick Regal Custom
1978 Chevrolet El Camino Conquista
1978-1984 Chevrolet El Camino Base
1978-1984 Chevrolet El Camino SS
1979-1981 Chevrolet El Camino Royal Knight
1981-1984 Chevrolet El Camino Conquista
1978-1980 Chevrolet Malibu Classic Estate
1978-1981 Chevrolet Malibu Classic Landau
1978-1981 Chevrolet Malibu Base
1979 Chevrolet Malibu Landau
1979 Chevrolet Malibu Police
1979-1980 Chevrolet Malibu Classic Sport
1979-1980 Chevrolet Malibu Estate
1978 Chevrolet Monte Carlo Sport
1978-1981 Chevrolet Monte Carlo Landau
1979 Chevrolet Monte Carlo Base
1980 Chevrolet Monte Carlo Sport
1981-1988 Chevrolet Monte Carlo Base
1983 Chevrolet Monte Carlo CL
1986-1988 Chevrolet Monte Carlo LS
1978-1979 Oldsmobile Cutlass Vista Cruiser
1979 Oldsmobile Cutlass Vista Cruiser Brougham
1980 Oldsmobile Cutlass Base
1980-1981 Oldsmobile Cutlass Brougham
1980-1981 Oldsmobile Cutlass LS
1978-1980 Pontiac Grand Prix SJ
1978-1983 Pontiac Grand Prix LJ
1978-1988 Pontiac Grand Prix Base
1984-1988 Pontiac Grand Prix LE
1988 Pontiac Grand Prix SE
1978-1981 Pontiac LeMans Base
1988 Pontiac LeMans Aerocoupe
1988 Pontiac LeMans Aerocoupe YL
1988 Pontiac LeMans Base
1988 Pontiac LeMans SE
1988 Pontiac LeMans Value Leader

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