.jpeg?q=90&p=thumb&w=200&h=200)
.jpeg?q=90&p=thumb&w=40&h=40)
Brakes 
Driveline 
Electronics 
Handlebars & Controls 
Package Deals 
Wheel Accessories 
Wheels by Vehicle 
Tools and Maintenance 
Universal & Repair 
Vivid Racing Gear 
QA1 GD507-09550D Pro Coil System for Classic Chevrolets
If you're looking to upgrade your 1963-1982 Corvette or your 1958-1970 Full Size Chevrolet, including models like the Impala, Bel Air, and Caprice, the QA1 GD507-09550D Pro Coil System is an excellent choice. This system offers unparalleled adjustability to match your driving style and preferences.
Key Features
- Fully Adjustable Ride Height: Tailor your vehicle's stance with ease.
- Valving Control: Fine-tune the ride quality to suit your needs.
- Lightweight Billet Aluminum Shocks: Designed for optimal performance without the extra weight.
- High Travel Springs: Fewer coils and a smaller wire diameter enhance suspension travel.
- Multiple Spring Rate Options: Choose the spring rate that fits your driving style, whether it's casual cruising or racing.
- Easy Installation: Bolt-in design makes setup a breeze.
- 100% Dyno Tested: Each unit is serialized for quality assurance.
- Serviceable and Rebuildable: Supported by 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 Rating: 550 lbs with a 9-inch spring
Fitment
This Pro Coil System is ideal for various applications, including drag racing, street performance, autocross, and road racing. It’s designed to fit seamlessly into your classic Chevrolet, allowing for an improved driving experience.
Customer Reviews
"The QA1 GD507-09550D has completely changed the way my Corvette handles. The adjustability is fantastic, and I love being able to fine-tune the ride to match my driving style. Installation was straightforward, and the performance has exceeded my expectations!"
"I installed these on my Impala, and the difference was night and day. The handling is sharp, and I appreciate the lightweight design. Highly recommend for anyone looking to upgrade their suspension!"
Other Part Numbers:
QA1 #qapGD507-09550D
⚠ 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: 21.30 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 |
| 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 |
