Concave Flow Digressive piston technology™ allows for tremendous amounts of low speed force that translates driver inputs into razor sharp control. Furthermore, the force “blows off” to provide the driver with a supple compliant ride while maintaining superior mechanical grip over rough surfaces. The Concave Flow Digressive Piston™ allows for a Jekyll and Hyde personality. Lower spring rates can be stiffened up by using the wide damping range as an artificial spring rate, while higher spring rates feel much smoother. The large adjustment range contributes to a comfortable ride on the street and unyielding performance on the track, all with the twist of a single adjustment knob. 🔄 #fortuneauto #fortuneautocoilovers #advanceforward #coilovers #suspension #shocks