The QA1 Pro Coil front coil-over system replaces the factory front suspension on 2003-2011 Ford Crown Victorias with a fully adjustable bolt-in setup. It uses a lightweight billet aluminum coil-over shock with a 9" spring rated at 450 lb/in, and the fully threaded body lets ride height and valving be dialed in for the desired stance and weight balance. A single knob adjusts rebound and compression together across 18 settings. Each shock is 100 percent dyno tested and serialized, serviceable and rebuildable through QA1 authorized service centers, and made in the USA.
Specifications:
- Lightweight billet aluminum coil-over shock
- Fully threaded shock body for ride height adjustment
- Single adjustable shock, 18 settings of simultaneous rebound and compression adjustment
- 9" coil-over spring rated at 450 lb/in
- 100 percent dyno tested and serialized
- Bolt-in installation
- Made in the USA
- Sold as a pair
- Part number: MS431-09450
Vehicle Applications:
- 2003 Ford Crown Victoria
- 2004 Ford Crown Victoria
- 2005 Ford Crown Victoria
- 2006 Ford Crown Victoria
- 2007 Ford Crown Victoria
- 2008 Ford Crown Victoria
- 2009 Ford Crown Victoria
- 2010 Ford Crown Victoria
- 2011 Ford Crown Victoria
FAQ
What vehicles does this QA1 Pro Coil kit fit?
It is a front coil-over system for 2003-2011 Ford Crown Victoria models. See the Vehicle Applications list for the covered years and submodels.
Is this coil-over single or double adjustable?
It is single adjustable, adjusting rebound and compression together through 18 settings with one knob.
Can ride height be adjusted?
Yes. The fully threaded shock body allows ride height adjustment to set stance and fine tune weight balance.
What spring is included?
The kit includes a 9" spring rated at 450 lb/in and is sold as a pair.
Is the shock rebuildable?
Yes. Each shock is 100 percent dyno tested and serialized and is serviceable and rebuildable through QA1 authorized service centers.
