QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 450lb/in - Flat Mount

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SKU: QAPGD401-10450B
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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 - Double Adjustable

Transform your classic GM vehicle's suspension with the QA1 GM Pro Front Coil-Over System. Engineered for enthusiasts seeking ultimate control over ride height and damping, this system is perfect for performance upgrades on a wide range of GM A-body and G-body platforms from 1968 to 1971. Experience a significant improvement in handling, stability, and overall driving dynamics.

Unleash Peak Performance:

  • Double Adjustable Valving: Independently adjust compression and rebound for precise tuning of your suspension's response. Dial in the perfect settings for street driving, autocross, or track days.
  • Adjustable Ride Height: The fully threaded body allows for easy ride height adjustment, enabling you to lower your vehicle's center of gravity, achieve an aggressive stance, and fine-tune weight balance for superior cornering.
  • Lightweight High Travel Springs: Features American-made, lightweight springs with fewer coils and smaller wire diameter, offering increased travel, reduced unsprung weight, and faster reaction times for optimized suspension performance. This specific kit includes a 10-inch spring with a 450 lb/in rate.
  • Direct Fit Design: Designed as a direct upgrade for various 1968-1971 Buick Skylark, Chevrolet Chevelle, El Camino, Oldsmobile Cutlass, and Pontiac GTO/LeMans models, simplifying installation.
  • Durable Aluminum Construction: Built with high-quality aluminum components for reduced weight and enhanced durability.

Whether you're aiming for improved track performance or a more responsive street feel, the QA1 GM Pro Front Coil-Over System provides the adjustability and quality you need. Upgrade your classic GM's handling capabilities today.

Discover the difference with QA1 GM Pro Coil-Over Systems 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 - Double Adjustable

Transform your classic GM vehicle's suspension with the QA1 GM Pro Front Coil-Over System. Engineered for enthusiasts seeking ultimate control over ride height and damping, this system is perfect for performance upgrades on a wide range of GM A-body and G-body platforms from 1968 to 1971. Experience a significant improvement in handling, stability, and overall driving dynamics.

Unleash Peak Performance:

  • Double Adjustable Valving: Independently adjust compression and rebound for precise tuning of your suspension's response. Dial in the perfect settings for street driving, autocross, or track days.
  • Adjustable Ride Height: The fully threaded body allows for easy ride height adjustment, enabling you to lower your vehicle's center of gravity, achieve an aggressive stance, and fine-tune weight balance for superior cornering.
  • Lightweight High Travel Springs: Features American-made, lightweight springs with fewer coils and smaller wire diameter, offering increased travel, reduced unsprung weight, and faster reaction times for optimized suspension performance. This specific kit includes a 10-inch spring with a 450 lb/in rate.
  • Direct Fit Design: Designed as a direct upgrade for various 1968-1971 Buick Skylark, Chevrolet Chevelle, El Camino, Oldsmobile Cutlass, and Pontiac GTO/LeMans models, simplifying installation.
  • Durable Aluminum Construction: Built with high-quality aluminum components for reduced weight and enhanced durability.

Whether you're aiming for improved track performance or a more responsive street feel, the QA1 GM Pro Front Coil-Over System provides the adjustability and quality you need. Upgrade your classic GM's handling capabilities today.

Discover the difference with QA1 GM Pro Coil-Over Systems 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 - Double Adjustable

Transform your classic GM vehicle's suspension with the QA1 GM Pro Front Coil-Over System. Engineered for enthusiasts seeking ultimate control over ride height and damping, this system is perfect for performance upgrades on a wide range of GM A-body and G-body platforms from 1968 to 1971. Experience a significant improvement in handling, stability, and overall driving dynamics.

Unleash Peak Performance:

  • Double Adjustable Valving: Independently adjust compression and rebound for precise tuning of your suspension's response. Dial in the perfect settings for street driving, autocross, or track days.
  • Adjustable Ride Height: The fully threaded body allows for easy ride height adjustment, enabling you to lower your vehicle's center of gravity, achieve an aggressive stance, and fine-tune weight balance for superior cornering.
  • Lightweight High Travel Springs: Features American-made, lightweight springs with fewer coils and smaller wire diameter, offering increased travel, reduced unsprung weight, and faster reaction times for optimized suspension performance. This specific kit includes a 10-inch spring with a 450 lb/in rate.
  • Direct Fit Design: Designed as a direct upgrade for various 1968-1971 Buick Skylark, Chevrolet Chevelle, El Camino, Oldsmobile Cutlass, and Pontiac GTO/LeMans models, simplifying installation.
  • Durable Aluminum Construction: Built with high-quality aluminum components for reduced weight and enhanced durability.

Whether you're aiming for improved track performance or a more responsive street feel, the QA1 GM Pro Front Coil-Over System provides the adjustability and quality you need. Upgrade your classic GM's handling capabilities today.

Discover the difference with QA1 GM Pro Coil-Over Systems 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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