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70mm ID All Kits come with 4 thrust sheets & 4 metal washer sheets (1 kit for 2 springs)
Helper springs allow the spring to stay on mounted on the coilover perch when the shock is under negative or zero load
Maintaining optimal comfort level for street use
Since the metric system is used widely in the sport compact and road race market
We utilize spring design with fewer coils which not only allows us to decrease un-sprung mass but to also completely eliminate the chance of coil bind
Swift Standard Conventional Springs 16in length (2.5" ID on one end), 5 in OD, 125 lbs/in Assist Springs 70mm ID All Kits come16in length (2. 5" ID on one end), 5 in OD, 125 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
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