Pay in 4 interest-free payments of $24.19 Learn more
Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
100/300 lbs/in Progressive
Round Wire Linear Rate Bump Springs 3000 lbs/in
Swift Spec-R Springs 12-15 HONDA CIVIC SI 4H915R
The increase in spring rate is based on the upper limits of the vehicles factory shock valving
Swift Round Wire Linear Rate Bump Springs 400 lbs/in Metric Coilover Springs 100/300 lbs/in ProgressiveRound Wire Linear Rate Bump Springs 400 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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