The Bilstein B16 Damptronic Coilovers provide the benefits of a Bilstein adjustable monotube coilover kit while maintaining full compatibility with factory-installed electronic suspension systems like VW's Dynamic Chassis Control and Porsche's PASM system. This allows for an upgraded Bilstein suspension without losing the control offered by your car's suspension control button. Features include full compatibility with factory adjustable suspension, a carefully matched spring and damper combination, and top-quality Bilstein monotube dampers. The B16 coilover is already an excellent product, and Bilstein is renowned for its outstanding dampers. This kit specifically offers a gas pressure strut with a 55mm outer diameter and part number 49-255874, designed for the VW Golf 7 with a 55mm strut.