The ST Coilover Kit 08-13 BMW 128i/135i RWD E88 Convertible is a complete suspension upgrade for your BMW. It includes a set of four adjustable coilovers that provide a lowered ride height, improved handling, and greater control. The kit also includes adjustable camber plates, bump stops, and all necessary hardware for installation. The coilovers feature a heavy-duty steel construction for maximum durability and a powder-coated finish for corrosion resistance. The kit is designed to provide a comfortable ride while still offering superior performance.