QA1

QA1 03-11 Ford Crown Victoria Pro Front Coil-Over System - Single Adj. - 9in x 550lbs/in - Aluminum - MS431-09550

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SKU:
QAPMS431-09550
UPC:
806990159915
MPN:
MS431-09550
Availability:
Regularly stocked product
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MSRP: $981.49
$885.95
— You save $95.54
Current Stock: 2

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Description

What is the spring rate of the QA1 Pro Coil coilovers?
These QA1 Pro Coil coilovers feature a precisely balanced 550 lbs per inch spring rate for optimal grip and predictable cornering.

Are these coilovers a direct bolt-on installation?
Achieve enhanced vehicle responsiveness with a bolt-on installation, simplifying the upgrade process for your Crown Victoria.

QA1 Pro Coil coilovers are engineered for 2003-2011 Ford Crown Victoria, delivering precise damping and superior handling for track enthusiasts. Featuring lightweight billet aluminum construction and a 550 lbs per inch spring rate, these coilovers significantly reduce unsprung weight for enhanced vehicle responsiveness. Elevate your performance driving with this premium suspension upgrade.

What Owners Say

Owners and enthusiasts consistently praise QA1 Pro Coil coilovers for transforming ride quality, with multiple users noting the front end feels modern and soaks up bumps exceptionally well. Street drivers report confident handling at highway speeds, even through aggressive maneuvers. Installation experiences vary, with some users encountering order or fitment issues, though QA1's customer service receives high marks for resolving problems quickly. The consensus acknowledges these aren't the cheapest option on the market, but serious builders appreciate the performance upgrade they deliver. QA1 has earned solid standing among classic Mustang and truck builders seeking proven suspension solutions that genuinely improve daily drivability.

Key Features

  • Single Adj.
  • 9in x 550lbs/in
  • Aluminum
  • MS431-09550
  • Serviceable and Rebuildable by QA1 Authorized Service Centers
  • Lightweight Billet Aluminum Coil-Over Shocks

Why Choose the QAP Coil-Overs - Pro Coil

Delivers precise damping control for a perfectly tuned ride and superior handling.

Achieves a balanced spring rate for optimal grip and predictable cornering.

Provides a significant reduction in unsprung weight for improved responsiveness.

Transforms your Crown Victoria with race-proven, durable aluminum construction.

Who Is This For?

Track / Autocross — 9/10
Lightweight aluminum reduces unsprung weight for responsiveness.

Street Performance — 8/10
Lightweight aluminum enhances vehicle responsiveness.

Racing Competition — 9/10
Lightweight aluminum reduces unsprung weight for responsiveness.

Daily Driving Comfort — 6/10
Single adjustable shocks offer some tuning capability.

Easy DIY Install — 7/10
Bolt-on install type simplifies installation process.

Visual / Aesthetic Upgrade — 7/10
Premium performance coilovers often enhance appearance.

Frequently Asked Questions

Will these QA1 Pro Coil coilovers fit my 2003-2011 Ford Crown Victoria?

QA1 Pro Coil coilovers are designed to fit your 2003-2011 Ford Crown Victoria directly. This bolt-on install type ensures a straightforward fitment process for your specific vehicle. You can confidently upgrade your Crown Victoria with this engineered solution.

How difficult is the installation of the QA1 Pro Coil coilovers?

Installation of the QA1 Pro Coil coilovers is simplified by their bolt-on install type. This design contributes to an easier installation process, rated a 7 for Easy DIY Install. Experience enhanced performance with a manageable upgrade.

What performance outcome can I expect from these QA1 coilovers?

Expect superior handling and responsiveness, with a score of 9 for Track / Autocross usage. The lightweight billet aluminum construction reduces unsprung weight, delivering enhanced vehicle dynamics. These coilovers transform your driving experience.

What is the recommended maintenance level for QA1 Pro Coil coilovers?

QA1 Pro Coil coilovers require a moderate maintenance level for optimal performance. They are serviceable and rebuildable by QA1 Authorized Service Centers, ensuring longevity. Proper care will maintain their superior damping control and handling.

Additional Resources

Official QA1 Product Page

Important Notices

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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Additional Information

Clearance Item:
N
MPN:
MS431-09550
Proposition 65:
Y
Case Lot Quantity:
1
Category:
Suspension>Coilovers
Install Type:
Bolt-On
Product Level:
Premium Performance
Track / Autocross:
9/10
Street Performance:
8/10
Racing Competition:
9/10
Daily Driving Comfort:
6/10
Easy DIY Install:
7/10
Visual / Aesthetic Upgrade:
7/10
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