The QA1 Pro Coil front system for 2003–2011 Crown Victorias includes single-adjustable shocks with a 9" spring rated 550 lb/in and fully threaded bodies for ride-height and balance adjustment. Select valving and spring rate to suit driving needs; the kit bolts in with standard tools and is 100% dyno tested and serialized. These aluminum coilovers are rebuildable by QA1-authorized service centers and made in the USA.
QA1 03-11 Ford Crown Victoria Pro Front Coil-Over System - Single Adj. - 9in x 550lbs/in - Aluminum