General description BFO coilovers are designed for those who want to replace old, worn-out struts while improving handling without a hefty price tag. This Airmatic to Coil Conversion Suspension is specifically tailored for Mercedes-Benz S-Class W220 models from 2000 to 2006, excluding those with 4MATIC or Active Body Control (ABC). Technical specifications Application: Mercedes-Benz S-Class W220 2000-2006 (S430, S500) OE/OEM Reference Number: 2203205013 Interchange Part Numbers: 2203205013, 220320501360, 220320501380, 220320501388 Quantity: 2x Rear spring and shock air conversion kit Damping: Not available Adjustable height: No Spring rate: 5 kg/mm (280 lbs/in) Shock type: Twin tube Adjustable camber plate: No