Swift Springs Metric Coilover Springs 70mm ID, 7 inch length, 10 kg/mm Pair Standard Coilover Springs and spring rates from 3kg

and spring rates from 3kg (168lbs) all the way up to 34kg (1900lbs)

The same springs are used in Super GT

Formula Nippon

8 inch length

Swift Springs Metric Coilover Springs 70mm ID, 7 inch length, 10 kg/mm Pair Standard Coilover Springs and spring rates from 3kg70mm ID, 7 inch length, 10 kg mm Swift Metric Coilover Springs are made from a proprietary (H5S. TW.) Material. This allows Swift Springs to manufacture a spring that is has more stroke, increased traction and handling as well as a spring with less coils, resulting in a lighter spring with less unsprung weight. The same springs are used in Super GT, Formula Nippon, F3, F3000, Super Taikyu, IMSA, Pirelli World Challenge, Rally America, VLN, Le Mans