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Vivid Racing Gear 
QA1 Pro Coil System for 2003-2011 Crown Victoria
If you're looking to take your 2003-2011 Crown Victoria's ride quality to the next level, the QA1 Pro Coil System (MS431-09550) is the perfect choice. This system offers complete adjustability, allowing you to customize your vehicle's ride height and valving control to match your unique driving style.
Key Features
- Fully Adjustable Ride Height: The threaded body design lets you easily adjust the ride height, giving you the freedom to achieve the perfect stance.
- Customizable Spring Rate: Choose a spring rate that suits your driving preferences. The system includes a 9" spring with a 550 lb rating, providing a balance of comfort and performance.
- Single Adjustable Shocks: The front Pro Coil shock kit features single adjustable stock mount shocks, allowing you to fine-tune the valving for optimal handling characteristics.
- Enhanced Handling: Adjusting the weight balance can significantly improve your vehicle's handling, making every drive a more enjoyable experience.
Specifications
- Part Number: MS431-09550
- Vehicle Compatibility: Designed specifically for 2003-2011 Ford Crown Victoria models.
- Spring Length: 9 inches
- Spring Rate: 550 lbs
- Shock Type: Single adjustable
Fitment
The QA1 Pro Coil System is engineered to fit seamlessly with your Crown Victoria, ensuring a straightforward installation process. Whether you're enhancing performance for spirited driving or simply looking for a smoother ride, this system delivers.
Customer Insights
Users have praised the QA1 Pro Coil System for its impressive adjustability and noticeable improvement in ride quality. Many have noted how easy it is to fine-tune the suspension settings, allowing them to achieve the perfect balance between comfort and performance. The quality of construction has also been highlighted, ensuring durability and longevity for years to come.
Other Part Numbers:
QA1 #qapMS431-09550
⚠ 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 | $842.99 |
| Shipping |
Weight: 4.10 Length: 20 Width: 4 Height: 4 |
| 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 | $714.40 | $933.85 | ? | $842.95 | ? | 2025-07-11 10:45:14 |
