The BC Racing ZX series is a top level range of coilover suspension kits based around the ZR series. It retains the top end features of the ZR series but in an upright monotube damper design as opposed to the inverted design of the ZR. The ZX series is designed for the discerning racer who wants the best in quality and performance without the premium price tag. The ZX series combine upright Mono-tube dampers with 3-way damper adjustment making them perfect for race use as they allow for the ultimate in damper control with high levels of damping consistency in all conditions. 3-way damping provides independent low and high speed bump and separate rebound damping adjustment for ultimate damper control. They also provide height adjustment which is obtained via the bottom mount rather than the spring platform, this allows for full damper travel at any ride height.3 way damper control with 30 click rebound, 20 click low speed bump and 12 click high speed bump adjustment for the ultimate in