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Swift Spring bag 16"~18" X OD 5
60mm ID All Kits come with 4 thrust sheets & 4 metal washer sheets (1 kit for 2 springs)
425 lbs/in
Lower the vehicle within tolerance of each vehicle's usable stroke
Swift Flat Wire Linear Rate Bump Springs 1000 lbs/in Pull Bar Springs Swift Spring bag 16"~18" XFlat Wire Linear Rate Bump Springs 1000 lbs in Swift Bump Springs are made from a proprietary material. The same springs are used in Super GT, Formula Nippon, F3, F3000, Super Taikyu, IMSA, Pirelli World Challenge, Rally America, VLN, Le Mans Series, Formula Drift, and many other professional racing avenues.
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