SKU: MS431-09450 | UPC: 806990159908
QA1 03-11 Ford Crown Victoria Pro Front Coil-Over System – Single Adj. – 9in x 450lbs/in – Aluminum
QA1 MS431-09450 is a front Pro Coil single adjustable stock mount shock kit designed for 2003-2011 Ford Crown Victoria models. It includes 9-inch springs rated at 450 lbs/in with flat ends for direct bolt-in replacement. Adjust ride height via the fully threaded body and fine-tune valving to match your driving needs for improved stance and weight balance.
Key Features
- Lightweight Billet Aluminum Construction: Cuts unsprung weight to enhance acceleration and cornering response on the street or track
- Ride Height Adjustable: Threaded body allows precise drop or stance tuning without affecting spring preload
- Single Adjustable Valving: 24-position damping control lets you dial in firmness for comfort or performance
- Bolt-In Installation: Uses factory stock mounts for straightforward setup with no fabrication required
- 100% Dyno Tested and Serialized: Each unit verified for consistent quality and performance straight from QA1
Product Notes
- Pair with rear coilovers for balanced suspension setup on Crown Victoria
- Rebuildable at QA1 authorized service centers for long-term durability
- Ships fully assembled ready for immediate installation
Installation Notes
- Professional installation recommended.
- Bolt directly to OEM upper and lower stock mounts
- Verify spring perch orientation during assembly for proper alignment
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2005 | Ford | Crown Victoria | S |
| 2005 | Ford | Crown Victoria | Special Edition |
| 2003-2008 | Ford | Crown Victoria | Base |
| 2010-2011 | Ford | Crown Victoria | Base |
| 2006-2009 | Ford | Crown Victoria | Fleet |
| 2003-2009 | Ford | Crown Victoria | LWB |
| 2003-2011 | Ford | Crown Victoria | LX |
| 2004-2006 | Ford | Crown Victoria | LX Sport |
Why Choose QA1?
- Over 30 years leading in performance shocks and suspension for racing and street
- All products manufactured in USA with 83,000 sq ft facility in Lakeville, MN
- Focus on dyno-tested components including rod ends, driveshafts, and coilovers
Frequently Asked Questions
- Q: Which 2003-2011 Ford Crown Victoria models does this fit?
A: Fits Base, S, Special Edition, Fleet, LWB, LX, and LX Sport submodels as listed in the fitment table - Q: What material is used for the coil-over body?
A: Billet aluminum body provides strength and reduces weight compared to steel - Q: What warranty covers this QA1 kit?
A: Backed by QA1 limited lifetime warranty on manufacturing defects when installed and maintained properly
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Secure foam-packed box measuring 23in x 13in x 10in
- Weight: 28 lbs
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