QA1 MS431-09450 KIT, FRONT PRO-COIL S-ADJ

QA1 Pro Coil Systems for 2003-2011 Crown Victorias 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 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. Lightweight Billet Aluminum Coil-Over Shocks; Made in the USA; Easy bolt-In Installation; Ride Height Adjustable; 100% Dyno Tested and Serialized; Serviceable and Rebuildable by QA1 Authorized Service Centers; Made in the USA