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Vivid Racing Gear 
QA1 GD507-10450C Pro Coil System
If you're seeking a way to enhance your ride's performance while achieving that perfect stance, the QA1 GD507-10450C Pro Coil System is designed just for you. This system is compatible with a range of classic vehicles, including 1971-1996 Impalas and various Full Size GM models like Chevy, Buick, Oldsmobile, and Pontiac, as well as select Ford full-size vehicles and Galaxies.
Key Features
- Fully Adjustable Ride Height: Tailor your vehicle's height to your preference, ensuring optimal aesthetics and performance.
- Valving Control: Customize the valving to match your driving style, whether you're cruising down the street or hitting the track.
- Lightweight Billet Aluminum Coil-Over Shocks: Engineered for durability and performance without the added weight.
- High Travel Springs: Designed with fewer coils and a smaller wire diameter for increased travel and quicker response times.
- Easy Installation: The bolt-in design makes it simple to upgrade your suspension without extensive modifications.
- 100% Dyno Tested: Each unit is serialized and tested to ensure top-notch performance.
- Serviceable and Rebuildable: Maintenance is a breeze with QA1 authorized service centers available for servicing.
- Made in the USA: Proudly manufactured for quality assurance.
Specifications
- Compression and Rebound Options: Available in independent double adjustable, simultaneous compression and rebound adjustable, or drag "R" Series adjustable.
- Spring Rating: Comes with a 10" spring rated at 450.
- Shock Dimensions: Compressed length of 9.63" and extended length of 14.5".
- Applications: Ideal for drag racing, street performance, autocross, road racing, and street rod applications.
- Sold in Pairs: Each kit includes two front Pro Coil double adjustable stock mount shocks.
Fitment
The QA1 GD507-10450C is a versatile choice for enthusiasts looking to upgrade their suspension system. Whether you drive a classic Chevy, Buick, Oldsmobile, Pontiac, or specific Ford models, this Pro Coil System will provide the adjustability and performance you need.
Customer Feedback
Users have praised the GD507-10450C for its impressive adjustability and ease of installation. Many noted that the lightweight design significantly improved their vehicle's handling, making it feel more responsive during both casual drives and competitive racing. The ability to fine-tune the ride height and valving has been a game-changer for those who demand precision in their vehicle's performance.
Other Part Numbers:
QA1 #qapGD507-10450C
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
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 ExpertsThe 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 FacilityThe 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 RacingIf 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.
| Sale price | None |
| Wholesale price | $917.99 |
| 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 |
| View In Admin |
| Carb Approved | - |
|---|---|
| Carb Number | - |
| Epa Status | N/A |
| Prop65 | Yes |
| Carb Required | - |
| Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Turn 14 | $777.96 | $1,016.94 | ? | $917.95 | ? | 2025-07-11 10:45:07 |
