Swift Standard Coilover Springs are made from a proprietary (H5S
650 lbs/in Barrel Type
spring lengths from 127mm (5in) to 280mm (11in)
200/500 lbs/in Progressive
) Material
Swift Standard Coilover Springs 8in length, 2.5 in ID, 650 lbs/in Metric Coilover Springs Swift Standard Coilover Springs are8in length, 2. 5 in ID, 650 lbs in Swift Standard 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