The Multimatic DSSV dampers on the Colorado ZR2 are unlike anything seen before. These shocks have a main body where the shaft rides and the extreme compression spool valve is housed; a middle chamber that houses the on-road compression and rebound spool valves; and a third chamber that acts as a fluid reservoir and separates the nitrogen charge from the hydraulic fluid. As the piston moves through the on-road zone, oil is forced into the spool valves housed in the middle chamber through special orifices in the body. When the shock is compressed outside of the normal zone, the third spool valve mounted on the shaft takes over damping duties. And during extreme rebound situations, such as having the wheels off of the ground, a special rebound valve at the base of the main body controls the motion. All of this combines to create a damper that works exceedingly well on the highway and in the dirt, with almost no compromise.