jinke 1pair front shock sebs size-b bumper power cushion absorber spring buffer for bmw 528

if the spring has been weak(bearing slightly heavier body is very low),they can the auxiliary spring, relatively improve the body,improve the bearing capacity. if often run rough road (turbulence when the instantaneous pressure tends to make the suspension system damage),they can enhance the damping effect, absorption transient pressure,protective dampers and suspension system.