Comfort and control is the difficult topic for many people who want to refit their cars . For this purpose , IASATI has this target for the best control function and develops actively this shock absorber ,RS ,which has high performance . Except the design of adjustable height and cylinder, we also devise the proper damper setting for the different kinds of cars. Because of the accurate 24 position adjustable damping function , no matter it's on town, mountain roads, and freeway . It all can make the drivers to feel the difference of control . Owing to the design of twin tubes , it can prevent the strong rebound caused of the terrible ground by the double-decked shock absorption device and .and raise the stability and comfort in high speed driving.