-9%

QA1 MS431-09450 03-11 Crown Vic Front Adj Coil-Overs, 450 lb

-9%

#721MS43109450

QA1 MS431-09450 03-11 Crown Vic Front Adj Coil-Overs, 450 lb

These QA1 Crown Victoria Pro Coil Systems are a great option for anyone looking for fully adjustable ride height and valving control
Choose a spring rate and adjustability that fits your driving style (sold as separate part numbers), adjust the valving to match, and you are on your way

Spring Rate:

450 lbs.

$925.95

Factory Shipped

$1,025.80

Save $99.85

Quantity

Need Help? Call to Order

Add to a list

Select a vehicle to verify Fitment

Select Vehicle

Product Summary

03-11 Ford Crown Victoria, Front Position, Anodized

These QA1 Crown Victoria Pro Coil Systems are a great option for anyone looking for fully adjustable ride height and valving control
Choose a spring rate and adjustability that fits your driving style (sold as separate part numbers), adjust the valving to match, and you are on your way
These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling
Specially designed for QA1's Pro Coil Systems, the American-made lightweight high travel springs have fewer coils and a smaller wire diameter, resulting in increased travel due to the larger distance between the coils
They reduce unsprung weight and react faster, optimizing suspension performance

See more details

Key Specs

Position	Front
Spring Rate	450 lbs.
Shock Adjustability	Single Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum

See more specs

Need To Know

Need help?

855.313.9176

View the Help Center

Quick and Easy Returns

Return Policy

QA1 MS431-09450 Details

QA1 specializes in providing performance shocks, suspension components, carbon fiber driveshafts, rod ends, ball joints and more to a variety of automotive markets, including circle track racing, drag racing, street performance, and street rodding. With over 83,000 square feet of manufacturing space in Lakeville, MN, QA1 is proud to offer an extensive line of American-made suspension and driveline. Founded in 1993 by Jim Jordan, QA1 introduced rod ends and spherical bearings specifically for the performance racing industry, quickly becoming the #1 name in rod ends, spherical bearings, custom linkages and similar products to the motorsports industry. Always on the cutting edge of technology, QA1 recently introduced in-house filament winding of carbon fiber and similar materials to provide driveshafts and other products. With continued focus on fine-tuning and expanding its offering of American-made high performance suspension components and carbon fiber driveshafts, QA1 has grown to be a household name in the performance aftermarket.

Front Pro Coil single adjustable stock mount shock kit
Includes 9" spring with rating of 450 and a flat end.

Charts

Installation Instructions (PDF)

Guides & Documents

Coilovers Installation Instructions (721MS43109450)

Warranty (QA1)

Technical Information (QA1)

CA Prop 65

QA1 MS431-09450 Specifications

KEY SPECS
MFG. Part #	MS431-09450
Brand	QA1
Position	Front
Spring Rate	450 lbs.
Shock Adjustability	Single Adjustable
Shock Type	Twin Tube
Shock Body Material	Aluminum
Upper Shock Mount	Bracket
Lower Shock Mount	Bushed Eyelet
Height Adjustable	Yes
Finish	Anodized

GENERAL
Spring Length	9 Inch
Mount Position	Body-Up
Number of Valving Selections	18
Coilover Kit Included	Yes
Coilover Springs Included	Yes
Sold in Quantity	Kit
Adjustable	Yes
Hardware Included	Yes
Crossmember Included	No
Welding Required	No
Mounting Bracket Included	Yes
Spring Finish	Powder Coated
Spring Color	Black
GTIN Code	806990159908

Ratings & Reviews

Be the first to write a review.

Questions & Answers

Be the first to ask a question.

Fitment

2003-2011 Ford Crown Victoria