jinke 1pair size-d rear shock sebs bumper power cushion absorber spring buffer for bmw m5

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.