These coilovers are three way height adjustable, dampening 18 front and 12 rear and very well built. They will let you go pretty damn low! We have to get them on our cars just to see how low. These are the R1's. They also come in R3 and R5, the difference is the R3 include the Front Pillow Ball Top Mount and the R5 includes the Rear Pillow Ball Top Mounts.