A damper with inner and outer tubes and a piston slidably disposed within the inner tube to define first and second working chambers. A fluid transport chamber is positioned between the inner and outer tubes and a collector chamber is positioned outside the outer tube. First and second external control valves are positioned in fluid communication with the collector chamber. An intake valve assembly, abutting one end of the inner tube, includes first and second intake valve bodies with intake passages and intake valves. A first intermediate chamber is positioned between the first and second intake valve bodies and an accumulation chamber is positioned between the second intake valve body and a closed end of the outer tube. The fluid transport chamber, first intermediate chamber, and accumulation chamber are arranged in fluid communication with the collector chamber. The intake valves control fluid flow between the accumulation chamber and second working chamber.