Front Pro Coil double adjustable stock mount shock. Coil-over shock only. Compressed length of 10.13" and extended length of 14". No spring included. The QA1 GM Coil-Over Shock is a great option for anyone looking for fully adjustable ride height and valving control. Choose a from double, single, Drag "R" Series or non-adjustable valving to fit your driving style and you are on your way.