See all Suspension products
Product thumb
QA1 Kit, GM Pro-Coil Aluminum D-Adj 10-550 Tapered Flat Large
$917.95

QA1 GD507-10550C Pro Coil System Overview

If you're looking to enhance your vehicle's performance, the QA1 GD507-10550C Pro Coil System is designed for the serious automotive enthusiast. This high-quality suspension system is compatible with a range of vehicles, specifically tailored for 1971-1996 Impalas and various Full Size GM models, including Chevy, Buick, Oldsmobile, and Pontiac. It even fits Ford full-size vehicles and Galaxies!

Key Features

  • Fully Adjustable Ride Height: Customize your ride height to achieve the perfect stance or to optimize weight balance for superior handling.
  • Valving Control: Select from independent compression and rebound double adjustable options, simultaneous compression and rebound adjustable, or the drag "R" Series adjustable for tailored performance.
  • Lightweight Design: Constructed with lightweight billet aluminum coil-over shocks and high travel springs, this system reduces unsprung weight and enhances responsiveness.
  • Easy Installation: The Pro Coil System is designed for a straightforward bolt-in installation, making it user-friendly for DIY enthusiasts.
  • Durability: Each component is 100% dyno tested, serialized, and can be serviced or rebuilt at QA1 Authorized Service Centers, ensuring longevity and reliability.
  • American Made: Proudly manufactured in the USA, this system meets high standards of quality and performance.

Specifications

The GD507-10550C features a compressed length of 9.63 inches and an extended length of 14.5 inches. It includes a 10-inch spring with a rating of 550, providing a balanced and responsive ride.

Fitment

This Pro Coil System is perfect for a variety of applications, including drag racing, street performance, autocross, road racing, and custom street rod builds. Whether you’re a casual driver or a hardcore racer, this system adapts to your needs.

Customer Insights

Users have praised the GD507-10550C for its remarkable adjustability and responsiveness. Many highlight the noticeable improvement in handling and ride quality compared to stock setups. The ease of installation and the ability to finely tune the suspension to match driving styles have also received positive feedback, making it a favorite among automotive enthusiasts.

Conclusion

Upgrade your ride with the QA1 GD507-10550C Pro Coil System. With its advanced features and customizable options, it’s sure to meet the demands of any driver seeking to improve their vehicle's performance.

Other Part Numbers:
QA1 #qapGD507-10550C

Proposition 65

WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

QA1 Banner

Who is QA1?

QA1 is a company that was founded in 1993. They specialize in manufacturing high-quality suspension parts, shock absorbers, composite driveshafts, bearings, steering components, and other related accessories. Their products are used in different industries such as the industrial, motorsports, and automotive sectors. Today, they are the leading manufacturer of OE parts in the market.

Suspension Experts

The company is best known for its motion control sub-assemblies and wide range of suspension systems. They are always searching for new ways to develop each component to enhance their products further. 

State-of-the-Art Facility

The company is housed in one of the most sophisticated facilities in the market to accommodate the increasing demands of its customers. With 100,000 square feet at their disposal, their facility contains high-tech equipment such as a CNC machine, laser cutting equipment, hydraulic presses, and filament windings. It allows them to manufacture the best product in the market.

QA1 is also one of the few companies that are ISO certified. It guarantees that their parts are manufactured consistently, following the standards put in place by the company and the regulators.

Purchase QA1 Products At Vivid Racing

If you are in the market for quality suspension parts for your vehicle, then QA1 is the brand for you. They have been manufacturing components for the last 28 years and have consistently given their customers parts that meet their demand. To know more about QA1, visit Vivid Racing and check out their list of parts that meet your demand.



You're seeing this because you're logged into an employee account or you're accessing the site through an internal IP address. This information is not normally visible.
Things
Sale price None
Wholesale price $917.99
Shipping Weight: 24.40
Length: 22
Width: 11
Height: 9
Product Added At Monday 23 December, 2024
Product Modified At Friday 11 July, 2025
Imported By ETLOverride
Last Edited By Turn_API
View In Admin

Emissions Info
Carb Approved -
Carb Number -
Epa Status N/A
Prop65 Yes
Carb Required -
Vendors
Some placeholder content for the collapse component. This panel is hidden by default but revealed when the user activates the relevant trigger.
Vendor Inv Cost Retail Jobber MAP Core Updated
Turn 14 $777.96 $1,016.94 ? $917.95 ? 2025-07-11 10:45:07

Manufacturer Direct Shipping
This item is available for direct shipping from the manufacturer. Please verify stock availability with the manufacturer. Once confirmed, you can place an order through [Meyer Distributing], who will arrange for dropshipping from the manufacturer directly to our customer.

Check out these other great products