Swift Springs Metric Coilover Springs 65mm ID, 4 inch length, 34 kg/mm Pair Metric Coilover Springs resulting in a lighter spring

resulting in a lighter spring with less unsprung weight

and many other professional racing avenues

4 inch length

5 inch length

6 inch length

Swift Springs Metric Coilover Springs 65mm ID, 4 inch length, 34 kg/mm Pair Metric Coilover Springs resulting in a lighter spring65mm ID, 4 inch length, 34 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