There is a component that looks like a shock absorber back there on each side that we generally refer to as a hydro-strut. In addition, any car with self-leveling also has a Nitrogen-filled, damper cell that looks like a metal baseball attached to it.

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"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo