Airmatic Rear Airmatic to Coil Conversion Kit Mercedes S Class W220 lowering kitPackage included 2x Rear new spring and shock air conversion kit all necessary hardware to convert your air ride suspension to coil system are included Dimension Size: 100*27. 5*18 cm Weight: 23. 6 kg Introduction This conversion kit convert air spring to coil spring and Electronic Dampers to passive dampers, which can help you get rid of issues that caused by Automatic Height Control like air leaking from the system, a clogged or weak compressor