QA1 GM Pro Front Coil-Over System - Single Adj. 10in 550lb/in Flat Aluminum — Fits 1968-1971 GM A-Body

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SKU: QAPGS401-10550B
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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 QA1

QA1 engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full QA1 lineup with fast shipping and expert fitment support — order with confidence.

QA1 GM Pro Front Coil-Over System - Single Adjustable

Elevate your classic GM A-Body's performance with the QA1 GM Pro Front Coil-Over System. This single-adjustable system offers unparalleled control over your vehicle's ride height and damping characteristics, allowing you to fine-tune your suspension for optimal handling and a perfect stance. Designed for models from 1968 to 1971, including popular vehicles like the Chevrolet Chevelle, Buick Skylark, Oldsmobile Cutlass, and Pontiac GTO, this coil-over system is engineered for a direct fit and significant performance gains.

Key Features and Benefits:

  • Adjustable Ride Height: The fully threaded body allows for precise ride height adjustments, enabling you to achieve the desired look and optimize weight distribution for improved cornering.
  • Single Valving Adjustment: Easily dial in your suspension's performance with a single adjustment knob, catering to your specific driving style, whether it's street cruising or track performance.
  • High-Travel, Lightweight Springs: QA1's American-made springs are designed with fewer coils and a smaller wire diameter, maximizing travel and reducing unsprung weight for quicker suspension response. This specific kit features a 10-inch spring with a 550 lbs/in rate, ideal for performance-oriented setups.
  • Durable Aluminum Construction: Built with lightweight and corrosion-resistant aluminum, these coilovers are designed to withstand the rigors of daily driving and demanding track conditions.
  • Direct Fitment: Engineered for a seamless installation on 1968-1971 GM A-Body platforms, ensuring compatibility and ease of upgrade.

Transform your classic muscle car's handling and aesthetics. Experience the difference quality engineering makes with QA1's Pro Coil Systems, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1968-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1968-1969 Buick Special Base
1968 Chevrolet Chevelle 300
1968 Chevrolet Chevelle Base
1968-1969 Chevrolet Chevelle 300 Deluxe
1968-1972 Chevrolet Chevelle Concours
1968-1972 Chevrolet Chevelle Malibu
1968-1972 Chevrolet Chevelle Nomad
1968-1972 Chevrolet Chevelle SS
1969-1972 Chevrolet Chevelle Concours Estate
1969-1972 Chevrolet Chevelle Greenbrier
1968-1972 Chevrolet El Camino Custom
1968-1972 Chevrolet El Camino SS
1971-1972 GMC Sprint Base
1972 GMC Sprint Custom
1968-1971 Oldsmobile 442 Base
1968 Oldsmobile Cutlass S
1968-1972 Oldsmobile Cutlass Base
1972 Oldsmobile Cutlass Cruiser
1968-1972 Oldsmobile Vista Cruiser Base
1968-1972 Pontiac GTO Base
1970-1971 Pontiac GTO The Judge
1968-1972 Pontiac LeMans Base
1969-1970 Pontiac LeMans Safari
1970-1972 Pontiac LeMans Sport
1971 Pontiac LeMans T37
1972 Pontiac LeMans Luxury
1968-1969 Pontiac Tempest Custom
1968-1969 Pontiac Tempest Safari
1970 Pontiac Tempest GT

Product Details

Product Description
Part Numbers
Sizing & Fit

About QA1

QA1 engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full QA1 lineup with fast shipping and expert fitment support — order with confidence.

QA1 GM Pro Front Coil-Over System - Single Adjustable

Elevate your classic GM A-Body's performance with the QA1 GM Pro Front Coil-Over System. This single-adjustable system offers unparalleled control over your vehicle's ride height and damping characteristics, allowing you to fine-tune your suspension for optimal handling and a perfect stance. Designed for models from 1968 to 1971, including popular vehicles like the Chevrolet Chevelle, Buick Skylark, Oldsmobile Cutlass, and Pontiac GTO, this coil-over system is engineered for a direct fit and significant performance gains.

Key Features and Benefits:

  • Adjustable Ride Height: The fully threaded body allows for precise ride height adjustments, enabling you to achieve the desired look and optimize weight distribution for improved cornering.
  • Single Valving Adjustment: Easily dial in your suspension's performance with a single adjustment knob, catering to your specific driving style, whether it's street cruising or track performance.
  • High-Travel, Lightweight Springs: QA1's American-made springs are designed with fewer coils and a smaller wire diameter, maximizing travel and reducing unsprung weight for quicker suspension response. This specific kit features a 10-inch spring with a 550 lbs/in rate, ideal for performance-oriented setups.
  • Durable Aluminum Construction: Built with lightweight and corrosion-resistant aluminum, these coilovers are designed to withstand the rigors of daily driving and demanding track conditions.
  • Direct Fitment: Engineered for a seamless installation on 1968-1971 GM A-Body platforms, ensuring compatibility and ease of upgrade.

Transform your classic muscle car's handling and aesthetics. Experience the difference quality engineering makes with QA1's Pro Coil Systems, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1968-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1968-1969 Buick Special Base
1968 Chevrolet Chevelle 300
1968 Chevrolet Chevelle Base
1968-1969 Chevrolet Chevelle 300 Deluxe
1968-1972 Chevrolet Chevelle Concours
1968-1972 Chevrolet Chevelle Malibu
1968-1972 Chevrolet Chevelle Nomad
1968-1972 Chevrolet Chevelle SS
1969-1972 Chevrolet Chevelle Concours Estate
1969-1972 Chevrolet Chevelle Greenbrier
1968-1972 Chevrolet El Camino Custom
1968-1972 Chevrolet El Camino SS
1971-1972 GMC Sprint Base
1972 GMC Sprint Custom
1968-1971 Oldsmobile 442 Base
1968 Oldsmobile Cutlass S
1968-1972 Oldsmobile Cutlass Base
1972 Oldsmobile Cutlass Cruiser
1968-1972 Oldsmobile Vista Cruiser Base
1968-1972 Pontiac GTO Base
1970-1971 Pontiac GTO The Judge
1968-1972 Pontiac LeMans Base
1969-1970 Pontiac LeMans Safari
1970-1972 Pontiac LeMans Sport
1971 Pontiac LeMans T37
1972 Pontiac LeMans Luxury
1968-1969 Pontiac Tempest Custom
1968-1969 Pontiac Tempest Safari
1970 Pontiac Tempest GT

Product Details

Product Description

About QA1

QA1 engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full QA1 lineup with fast shipping and expert fitment support — order with confidence.

QA1 GM Pro Front Coil-Over System - Single Adjustable

Elevate your classic GM A-Body's performance with the QA1 GM Pro Front Coil-Over System. This single-adjustable system offers unparalleled control over your vehicle's ride height and damping characteristics, allowing you to fine-tune your suspension for optimal handling and a perfect stance. Designed for models from 1968 to 1971, including popular vehicles like the Chevrolet Chevelle, Buick Skylark, Oldsmobile Cutlass, and Pontiac GTO, this coil-over system is engineered for a direct fit and significant performance gains.

Key Features and Benefits:

  • Adjustable Ride Height: The fully threaded body allows for precise ride height adjustments, enabling you to achieve the desired look and optimize weight distribution for improved cornering.
  • Single Valving Adjustment: Easily dial in your suspension's performance with a single adjustment knob, catering to your specific driving style, whether it's street cruising or track performance.
  • High-Travel, Lightweight Springs: QA1's American-made springs are designed with fewer coils and a smaller wire diameter, maximizing travel and reducing unsprung weight for quicker suspension response. This specific kit features a 10-inch spring with a 550 lbs/in rate, ideal for performance-oriented setups.
  • Durable Aluminum Construction: Built with lightweight and corrosion-resistant aluminum, these coilovers are designed to withstand the rigors of daily driving and demanding track conditions.
  • Direct Fitment: Engineered for a seamless installation on 1968-1971 GM A-Body platforms, ensuring compatibility and ease of upgrade.

Transform your classic muscle car's handling and aesthetics. Experience the difference quality engineering makes with QA1's Pro Coil Systems, available at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1968-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1970 Buick Skylark 350
1972 Buick Skylark 350
1968-1969 Buick Special Base
1968 Chevrolet Chevelle 300
1968 Chevrolet Chevelle Base
1968-1969 Chevrolet Chevelle 300 Deluxe
1968-1972 Chevrolet Chevelle Concours
1968-1972 Chevrolet Chevelle Malibu
1968-1972 Chevrolet Chevelle Nomad
1968-1972 Chevrolet Chevelle SS
1969-1972 Chevrolet Chevelle Concours Estate
1969-1972 Chevrolet Chevelle Greenbrier
1968-1972 Chevrolet El Camino Custom
1968-1972 Chevrolet El Camino SS
1971-1972 GMC Sprint Base
1972 GMC Sprint Custom
1968-1971 Oldsmobile 442 Base
1968 Oldsmobile Cutlass S
1968-1972 Oldsmobile Cutlass Base
1972 Oldsmobile Cutlass Cruiser
1968-1972 Oldsmobile Vista Cruiser Base
1968-1972 Pontiac GTO Base
1970-1971 Pontiac GTO The Judge
1968-1972 Pontiac LeMans Base
1969-1970 Pontiac LeMans Safari
1970-1972 Pontiac LeMans Sport
1971 Pontiac LeMans T37
1972 Pontiac LeMans Luxury
1968-1969 Pontiac Tempest Custom
1968-1969 Pontiac Tempest Safari
1970 Pontiac Tempest GT

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