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Aluminum Z-Tube
Swift Assist Springs are made from a proprietary material
Swift Spec-R Springs 09-16 AUDI S4 4X923R
we have introduced the metric line of coilover springs to reduce confusion and to better cater to our customer's needs
Flat Wire Linear Rate Bump Springs 800 lbs/in
Swift 60mm ID Helper Spring Adapter Kit Assist Springs Aluminum Z-Tube60mm ID Adapter kit comes with an adapter and 2 metal washer sheets (1 kit for 1 spring). Swift Helper Springs are made from a proprietary material. Helper springs allow the spring to stay on mounted on the coilover perch when the shock is under negative or zero load, also known as droop travel. 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
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