especially since these two aspects contrast with each other
F87 M2(P/N: DIA2175X203C24)
Spring Rate Drop Front Rear Front Rear Kg/mm Kg/mm Inch Inch 8
70mm ID Adapter kit comes with an adapter and 2 metal washer sheets (1 kit for 1 spring)
Helper springs allow the spring to stay on mounted on the coilover perch when the shock is under negative or zero load
Swift Helper Springs 65mm ID, 2.8 in length 0.8 kg/mm Pair Swift Sport Springs especially since these two aspects65mm ID, 2. 8 in length 0. 8 kg mm Swift Helper Springs are made from a proprietary material. Helper springs allow the spring to stay on mounted on the coilover perch when the shock is under negative or zero load, also known as droop travel. The same springs are used in Super GT, Formula Nippon, F3, F3000, Super Taikyu, IMSA, Pirelli World Challenge, Rally America, VLN, Le Mans Series, Formula Drift, and many other professional racing avenues.