Looking for an easy way to convert your stock suspension to a coil-over suspension? QA1 has you covered with their Pro Coil-Over Conversion System. Includes absolutely everything you need to get the job done! Lightweight Aluminum Ride. Height Adjustable. Spring Mounting Hardware Included. 100% Dyno Tested and Serialized. Revalveable and Rebuildable by the QA1 Factory or QA1 Authorized Service Centers. 150 lbs spring rate. Made in the USA. 324 valving sections. Sold as a kit. 12 inch coilover springs included.