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230 lbs/in
and spring rates from 3kg (168lbs) all the way up to 34kg (1900lbs)
Since the metric system is used widely in the sport compact and road race market
220 lbs/in
Formula Nippon
Swift Springs Metric Coilover Springs 65mm ID, 5 inch length, 16 kg/mm Pair Metric Coilover Springs 230 lbs/in65mm ID, 5 inch length, 16 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
