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60mm ID All Kits come with 4 thrust sheets & 4 metal washer sheets (1 kit for 2 springs)
160 lbs/in
20in length
3 in length 0
1000 lbs/in
Swift Round Wire Linear Rate Bump Springs 700 lbs/in Assist Springs 60mm ID All Kits comeRound Wire Linear Rate Bump Springs 700 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.
