LinesRacing carries different types of BMW car models, there are F30, E36, E46, E90and etc. LinesRacing coilovers are designed for both your daily street driving and professional racing in leisure time. Featuring 53mm mono-tube shock and cold wounded springs that are made from high strength SAE9252 steel to optimize the balance between performance and comfort. A mono-tube design separates the gas and shock oil which yields consistent shock performance lap after lap. The top hat is attached to the car via a pillow ball mount that incorporates high performance Japanese KOYO 6204Z bearing. S-series coilovers offer a complete and durable coilover system for maintaining high performance easier. And of course, you can't beat this price!