The 8212 series is an aluminum-bodied externally-double adjustable coil over. It has a twin tube hydraulic construction that is fully rebuildable and the valving can be matched to a wide rage of applications. Adjustment of the rebound and compression damping is provided by two controls and may be adjusted independently of one another, without removing it from the car. Have a question regarding this item? Please use our Contact Us form or call (707) 938-5664 for Customer Service.