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QA1 KIT, FRONT PRO-COIL D-ADJ 2003-2011
$1055.95

QA1 Pro Coil System MD431-09550 for Crown Victoria (2003-2011)

If you're looking to take your driving experience to the next level, the QA1 Pro Coil System MD431-09550 is designed just for you. This system offers fully adjustable ride height and valving control, allowing you to customize your vehicle's performance to suit your unique driving style.

Key Features

  • Adjustable Ride Height: The fully threaded body allows you to easily adjust your ride height, giving your Crown Victoria the perfect stance.
  • Customizable Spring Rate: Choose a spring rate that matches your driving preferences, ensuring optimal performance on the road.
  • Double Adjustable Shocks: The front Pro Coil double adjustable stock mount shock kit provides precise control over both compression and rebound settings.
  • High-Quality Components: Includes a 9" spring with a robust rating of 550, designed for flat-end performance.

Benefits of the MD431-09550 System

This Pro Coil System not only enhances handling but also fine-tunes the weight balance of your vehicle for superior performance. Whether you're cruising through city streets or tackling winding roads, you'll appreciate the improved stability and comfort that this system delivers.

Specifications

  • Model: MD431-09550
  • Application: Fits 2003-2011 Ford Crown Victoria
  • Spring Length: 9 inches
  • Spring Rate: 550 lbs/in
  • Type: Double adjustable stock mount shock kit

Fitment

The QA1 Pro Coil System MD431-09550 is specifically engineered for the 2003-2011 Crown Victoria, ensuring a perfect fit and seamless installation. This system is ideal for both daily drivers and performance enthusiasts looking to enhance their vehicle's capabilities.

Customer Insights

Users have noted that the QA1 Pro Coil System significantly improves handling and ride quality. Many have expressed satisfaction with the ease of adjustability, allowing them to tailor their vehicle's performance to their liking. The quality of the components has also received high praise, making it a reliable choice for those looking to upgrade their suspension system.

Other Part Numbers:
QA1 #qapMD431-09550

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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Things
Sale price None
Wholesale price $1,055.99
Shipping Weight: 21.70
Length: 21
Width: 9
Height: 8
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 $894.91 $1,169.82 ? $1,055.95 ? 2025-07-11 10:45:14

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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