Compression Damping Dual Speed (CDXS) valves are included for precisely dialing in your suspension performance. CDXS controls fluid flow under compression, with independent adjustability of high speed and low speed compression force. 10 discreet detented settings for both low and high-speed adjustment knobs allow separate adjustments for handling response and overall aggressiveness. When paired with ICON 3.0 Series Coilovers with CDXS on the front, vehicle control can be precisely dialed in front to rear, resulting in the best overall driving experience.