Best flowing & sounding exhaust on the market today
Lower the vehicle within tolerance of each vehicle's usable stroke
2007+ Nissan R35 GT-R Rear Axle Set(Pair) O
304SS contruction
Swift Round Wire Helper Springs 3" ID, 4" Length, 250 lbs/in nfera Best flowing & sounding exhaust3in ID, 4 in length 250 lbs in 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 Drift, and many other professional racing avenues.