Koni Special D (Red) Rear Shock — Fits 1989-1991 Avanti All Models

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SKU: KON8040 1088
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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 KONI

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

Watch in action

Koni Special D (Red) Rear Shock for 1989-1991 Avanti

Elevate the driving dynamics of your 1989-1991 Avanti with the Koni Special D (Red) Rear Shock. These premium shock absorbers are engineered to provide a significant enhancement in both ride comfort and vehicle control, making every drive more enjoyable. Koni's Special D series is celebrated for its ability to deliver consistent performance and durability, making it an ideal choice for maintaining or upgrading your Avanti's suspension system.

Reliable Performance for Classic Vehicles

The Koni Special D 8040 series shocks feature a robust twin-tube, low-pressure gas-charged design. This construction ensures stable damping characteristics and a responsive feel, absorbing road imperfections while maintaining excellent road holding. While non-adjustable, these shocks are factory-tuned to offer a balanced performance profile, perfect for the unique characteristics of the Avanti. Installation is designed for a direct fit, ensuring a hassle-free upgrade.

  • Improved ride comfort and stability
  • Enhanced road holding and handling
  • Durable construction for long-lasting performance
  • Direct fitment for 1989-1991 Avanti All Models
  • Koni's legendary quality and reliability

Invest in Koni Special D shocks from GGCRACING to revitalize your Avanti's suspension performance.

Vehicle Fitment

Years Make Model Trim
1989-1991 Avanti II Base
1973-1975 Buick Apollo Base
1975 Buick Apollo SR
1971-1973 Buick Centurion Base
1973-1975 Buick Century Luxus
1973-1977 Buick Century Base
1975-1977 Buick Century Special
1975-1977 Buick Century Custom
1976 Buick Century Indianapolis 500 Pace Car
1971-1974 Buick Electra 225
1971-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1984 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1984 Buick Electra Park Avenue
1980-1985 Buick Electra Estate Wagon
1977-1983 Buick Estate Wagon Base
1977 Buick LeSabre Custom Sport
1977-1978 Buick LeSabre Custom
1977-1981 Buick LeSabre Base
1978-1981 Buick LeSabre Sport
1979-1985 Buick LeSabre Limited
1982 Buick LeSabre Limited Edition F/E
1982-1985 Buick LeSabre Custom
1985 Buick LeSabre Collector's Edition
1985 Buick LeSabre Estate Wagon
1973-1977 Buick Regal Base
1976-1977 Buick Regal SR
1971 Buick Riviera Gran Sport
1971-1978 Buick Riviera Base
1975 Buick Riviera GS
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1992-1995 Buick Roadmaster Base
1992-1995 Buick Roadmaster Estate Wagon
1992-1995 Buick Roadmaster Limited
1996 Buick Roadmaster Collector's Edition
1996 Buick Roadmaster Estate Wagon Collector's Edition
1996 Buick Roadmaster Limited Collector's Edition
1968-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1964-1967 Buick Special Deluxe
1964-1969 Buick Special Base
1970-1972 Buick Sportwagon Base
1977-1984 Cadillac DeVille Base
1977-1984 Cadillac DeVille d'Elegance
1978-1979 Cadillac DeVille Phaeton
1978-1984 Cadillac DeVille Cabriolet
1977 Cadillac Fleetwood 75
1977 Cadillac Fleetwood 75 Formal
1977-1979 Cadillac Fleetwood Formal
1977-1984 Cadillac Fleetwood Brougham
1978-1981 Cadillac Fleetwood Base
1978-1984 Cadillac Fleetwood Brougham d'Elegance
1976-1979 Cadillac Seville Base

…and 120 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About KONI

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

Watch in action

Koni Special D (Red) Rear Shock for 1989-1991 Avanti

Elevate the driving dynamics of your 1989-1991 Avanti with the Koni Special D (Red) Rear Shock. These premium shock absorbers are engineered to provide a significant enhancement in both ride comfort and vehicle control, making every drive more enjoyable. Koni's Special D series is celebrated for its ability to deliver consistent performance and durability, making it an ideal choice for maintaining or upgrading your Avanti's suspension system.

Reliable Performance for Classic Vehicles

The Koni Special D 8040 series shocks feature a robust twin-tube, low-pressure gas-charged design. This construction ensures stable damping characteristics and a responsive feel, absorbing road imperfections while maintaining excellent road holding. While non-adjustable, these shocks are factory-tuned to offer a balanced performance profile, perfect for the unique characteristics of the Avanti. Installation is designed for a direct fit, ensuring a hassle-free upgrade.

  • Improved ride comfort and stability
  • Enhanced road holding and handling
  • Durable construction for long-lasting performance
  • Direct fitment for 1989-1991 Avanti All Models
  • Koni's legendary quality and reliability

Invest in Koni Special D shocks from GGCRACING to revitalize your Avanti's suspension performance.

Vehicle Fitment

Years Make Model Trim
1989-1991 Avanti II Base
1973-1975 Buick Apollo Base
1975 Buick Apollo SR
1971-1973 Buick Centurion Base
1973-1975 Buick Century Luxus
1973-1977 Buick Century Base
1975-1977 Buick Century Special
1975-1977 Buick Century Custom
1976 Buick Century Indianapolis 500 Pace Car
1971-1974 Buick Electra 225
1971-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1984 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1984 Buick Electra Park Avenue
1980-1985 Buick Electra Estate Wagon
1977-1983 Buick Estate Wagon Base
1977 Buick LeSabre Custom Sport
1977-1978 Buick LeSabre Custom
1977-1981 Buick LeSabre Base
1978-1981 Buick LeSabre Sport
1979-1985 Buick LeSabre Limited
1982 Buick LeSabre Limited Edition F/E
1982-1985 Buick LeSabre Custom
1985 Buick LeSabre Collector's Edition
1985 Buick LeSabre Estate Wagon
1973-1977 Buick Regal Base
1976-1977 Buick Regal SR
1971 Buick Riviera Gran Sport
1971-1978 Buick Riviera Base
1975 Buick Riviera GS
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1992-1995 Buick Roadmaster Base
1992-1995 Buick Roadmaster Estate Wagon
1992-1995 Buick Roadmaster Limited
1996 Buick Roadmaster Collector's Edition
1996 Buick Roadmaster Estate Wagon Collector's Edition
1996 Buick Roadmaster Limited Collector's Edition
1968-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1964-1967 Buick Special Deluxe
1964-1969 Buick Special Base
1970-1972 Buick Sportwagon Base
1977-1984 Cadillac DeVille Base
1977-1984 Cadillac DeVille d'Elegance
1978-1979 Cadillac DeVille Phaeton
1978-1984 Cadillac DeVille Cabriolet
1977 Cadillac Fleetwood 75
1977 Cadillac Fleetwood 75 Formal
1977-1979 Cadillac Fleetwood Formal
1977-1984 Cadillac Fleetwood Brougham
1978-1981 Cadillac Fleetwood Base
1978-1984 Cadillac Fleetwood Brougham d'Elegance
1976-1979 Cadillac Seville Base

…and 120 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About KONI

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

Watch in action

Koni Special D (Red) Rear Shock for 1989-1991 Avanti

Elevate the driving dynamics of your 1989-1991 Avanti with the Koni Special D (Red) Rear Shock. These premium shock absorbers are engineered to provide a significant enhancement in both ride comfort and vehicle control, making every drive more enjoyable. Koni's Special D series is celebrated for its ability to deliver consistent performance and durability, making it an ideal choice for maintaining or upgrading your Avanti's suspension system.

Reliable Performance for Classic Vehicles

The Koni Special D 8040 series shocks feature a robust twin-tube, low-pressure gas-charged design. This construction ensures stable damping characteristics and a responsive feel, absorbing road imperfections while maintaining excellent road holding. While non-adjustable, these shocks are factory-tuned to offer a balanced performance profile, perfect for the unique characteristics of the Avanti. Installation is designed for a direct fit, ensuring a hassle-free upgrade.

  • Improved ride comfort and stability
  • Enhanced road holding and handling
  • Durable construction for long-lasting performance
  • Direct fitment for 1989-1991 Avanti All Models
  • Koni's legendary quality and reliability

Invest in Koni Special D shocks from GGCRACING to revitalize your Avanti's suspension performance.

Vehicle Fitment

Years Make Model Trim
1989-1991 Avanti II Base
1973-1975 Buick Apollo Base
1975 Buick Apollo SR
1971-1973 Buick Centurion Base
1973-1975 Buick Century Luxus
1973-1977 Buick Century Base
1975-1977 Buick Century Special
1975-1977 Buick Century Custom
1976 Buick Century Indianapolis 500 Pace Car
1971-1974 Buick Electra 225
1971-1974 Buick Electra 225 Custom
1973 Buick Electra Base
1974 Buick Electra 225 Limited
1975 Buick Electra Custom
1975-1984 Buick Electra Limited
1976-1979 Buick Electra 225
1978-1984 Buick Electra Park Avenue
1980-1985 Buick Electra Estate Wagon
1977-1983 Buick Estate Wagon Base
1977 Buick LeSabre Custom Sport
1977-1978 Buick LeSabre Custom
1977-1981 Buick LeSabre Base
1978-1981 Buick LeSabre Sport
1979-1985 Buick LeSabre Limited
1982 Buick LeSabre Limited Edition F/E
1982-1985 Buick LeSabre Custom
1985 Buick LeSabre Collector's Edition
1985 Buick LeSabre Estate Wagon
1973-1977 Buick Regal Base
1976-1977 Buick Regal SR
1971 Buick Riviera Gran Sport
1971-1978 Buick Riviera Base
1975 Buick Riviera GS
1976 Buick Riviera Sport
1976 Buick Riviera SR
1978 Buick Riviera LXXV Anniversary Edition
1992-1995 Buick Roadmaster Base
1992-1995 Buick Roadmaster Estate Wagon
1992-1995 Buick Roadmaster Limited
1996 Buick Roadmaster Collector's Edition
1996 Buick Roadmaster Estate Wagon Collector's Edition
1996 Buick Roadmaster Limited Collector's Edition
1968-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1964-1967 Buick Special Deluxe
1964-1969 Buick Special Base
1970-1972 Buick Sportwagon Base
1977-1984 Cadillac DeVille Base
1977-1984 Cadillac DeVille d'Elegance
1978-1979 Cadillac DeVille Phaeton
1978-1984 Cadillac DeVille Cabriolet
1977 Cadillac Fleetwood 75
1977 Cadillac Fleetwood 75 Formal
1977-1979 Cadillac Fleetwood Formal
1977-1984 Cadillac Fleetwood Brougham
1978-1981 Cadillac Fleetwood Base
1978-1984 Cadillac Fleetwood Brougham d'Elegance
1976-1979 Cadillac Seville Base

…and 120 additional fitments. Contact us to confirm yours.

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