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QA1 Kit, GM Pro-Coil Aluminum S-Adj 11-250 Tapered Flat Large - GS507-11250C

QA1 GS507-11250C Pro Coil System

Upgrade your ride with the QA1 GS507-11250C Pro Coil System, tailored for 1971-1996 Impalas and a variety of Full Size GM vehicles, including Chevy, Buick, Oldsmobile, and Pontiac models. This system is perfect for drivers seeking customizable ride height and valving control to match their unique driving style.

Key Features

  • Fully Adjustable Ride Height: The fully threaded body design allows for precise adjustments to achieve your ideal stance.
  • Customizable Valving: Tailor the shock valving to suit your driving preferences, whether for daily cruising or high-performance racing.
  • Lightweight Construction: Made with lightweight billet aluminum and high travel springs, this system reduces unsprung weight and enhances suspension response.
  • Multiple Spring Rates: Choose from various spring rates, tested for applications ranging from casual street driving to intense racing.
  • Easy Installation: Designed for a straightforward, bolt-in installation process.
  • 100% Dyno Tested: Each unit is serialized and rigorously tested to ensure top-notch performance.
  • Serviceable and Rebuildable: Maintain your system easily through QA1 Authorized Service Centers.
  • Made in the USA: Proudly manufactured for quality and reliability.

Specifications

  • Compressed Length: 9.63 inches
  • Extended Length: 14.5 inches
  • Spring Length: 11 inches
  • Spring Rate: 250 lbs

Fitment

This Pro Coil System is compatible with a wide range of Full Size GM vehicles, ensuring a perfect fit for your 1971-1996 Impala or other suitable models.

Customer Feedback

Many users have praised the QA1 GS507-11250C for its remarkable adjustability and improved handling. One user noted, "The ride quality is fantastic, and the ability to adjust the height has made a significant difference in how my car performs on the road." Another satisfied customer mentioned, "Installation was a breeze, and the lightweight design really enhances the responsiveness of my suspension." These testimonials highlight the system's effectiveness for both street and performance applications.

Other Part Numbers:
QA1 #qapGS507-11250C

Proposition 65

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

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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.



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Sale price None
Wholesale price $713.98
Shipping Weight: 28.50
Length: 25
Width: 10
Height: 6
Product Added At Monday 23 December, 2024
Product Modified At Friday 11 July, 2025
Imported By ETLOverride
Last Edited By Turn_API
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Emissions Info
Carb Approved -
Carb Number -
Epa Status N/A
Prop65 Yes
Carb Required -
Vendors
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Vendor Inv Cost Retail Jobber MAP Core Updated
Turn 14 $605.07 $790.94 ? $713.95 ? 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.

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