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QA1 Pro front coil-over system full view
Close-up of double adjustable aluminum coil-over
Flat Large spring pocket detail
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QA1 GM Pro Front Coil-Over System - Double Adj. - 10in x 500lbs/in - Flat Large - Aluminum

QA1
QAPGD507-10500C
806990136619
Coilovers
1 Units In Stock - Ships Next Business Day
$ 1,069.01 $ 964.95
$ 964.95

SKU: GD507-10500C   |   UPC: 806990062574

QA1 Pro Front Coil-Over System - Double Adjustable - 10" x 500 lb/in - Flat Large - Aluminum for 1971-1996 GM Full-Size Vehicles

The QA1 GD507-10500C Pro Front Coil-Over System is the ultimate bolt-in suspension upgrade for 1971-1996 Impalas and full-size GM vehicles (including Chevy, Buick, Oldsmobile, Pontiac) as well as Ford full-size cars and Galaxies. This double-adjustable kit features lightweight aluminum shocks with independent 18-position compression and 18-position rebound tuning (324 possible combinations) and 10" high-travel 500 lb/in springs. It delivers fully adjustable ride height, superior handling, and the ability to fine-tune for street, autocross, drag racing, or road course use. The "Flat Large" configuration is optimized for popular full-size GM applications requiring a larger spring pocket.

Key Features

  • Double Adjustable Shocks: Independent compression and rebound control with 18 clicks each (324 combinations)
  • 500 lb/in High-Travel Springs: Stiffer performance rate for excellent support and weight transfer
  • 10" Spring Length: Optimized for lowered applications with maximum travel
  • Fully Threaded Aluminum Body: Easy, precise ride height adjustment for the perfect stance
  • Bolt-In Installation: Direct replacement for factory coil springs and shocks
  • Lightweight Design: Reduces unsprung weight for improved handling and response

Specifications

Specification Detail
Part Number GD507-10500C
Position Front
Shock Type Double Adjustable Aluminum Coil-Over
Spring Rate 500 lb/in
Spring Length 10"
Spring Pocket Flat Large
Compatibility 1971-1996 GM Full-Size Vehicles (Impala, Caprice, etc.) and Ford Full-Size / Galaxies
Installation Bolt-On Direct Replacement
Country of Origin United States
Warranty Limited Lifetime (QA1)
Shipping Weight Approx. 35-45 lbs

What's Included

  • Pair of QA1 Double Adjustable Front Pro Coil Shocks
  • Pair of 10" x 500 lb/in High-Travel Springs
  • All Necessary Mounting Brackets and Hardware
  • Detailed Installation Instructions

Product Notes

  • Designed for 1971-1996 Impalas and full-size GM vehicles (Chevy, Buick, Oldsmobile, Pontiac) plus Ford full-size and Galaxies
  • 500 lb/in spring rate is stiffer ideal for performance and aggressive driving applications
  • Professional installation and front alignment recommended

Installation Notes

  • Estimated time: 4-6 hours, moderate difficulty
  • Bolt-on system using factory mounting points
  • Full front alignment required after installation

This Part Fits

Year Make Model Notes
1971 to 1996 Chevrolet Impala / Caprice / Full-Size All Models requiring Flat Large spring pocket
1971 to 1996 Buick Full-Size Models All Models requiring Flat Large spring pocket
1971 to 1996 Oldsmobile Full-Size Models All Models requiring Flat Large spring pocket
1971 to 1996 Pontiac Full-Size Models All Models requiring Flat Large spring pocket
1971 to 1996 Ford Full-Size / Galaxie Models requiring Flat Large spring pocket

Why Choose QA1 Pro Front Coil-Over System?

  • Full double-adjustable control for perfect ride height and handling balance
  • Lightweight aluminum shocks with high-travel springs for maximum performance
  • Premium QA1 quality made in the USA with lifetime warranty confidence

Frequently Asked Questions

  • Q: Will this kit fit my 1978 Chevrolet Impala?
    A: Yes, GD507-10500C is designed for 1971-1996 GM full-size vehicles requiring the Flat Large spring pocket.
  • Q: What spring rate is included?
    A: 500 lb/in stiffer rate ideal for performance and aggressive driving.
  • Q: Is an alignment required?
    A: Yes, a full front alignment is required after installation.
  • Q: What is the warranty?
    A: Covered by QA1’s limited lifetime warranty.

Shipping & Handling

  • Method: UPS / FedEx Ground (Oversize)
  • Availability: In stock ships same or next business day
  • Packaging: Secure protective packaging
  • Weight: Approx. 35-45 lbs

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