Swift Round Wire Helper Spring 3" ID 4" Length 40 lbs/in Upper Intercooler Pipe 220 lbs/in

220 lbs/in

modified caster or lower arm geometry

130 lbs/in Barrel Type

25in) to 70mm (2

It's time to give your BMW the adjustment it needs

Swift Round Wire Helper Spring 3" ID 4" Length 40 lbs/in Upper Intercooler Pipe 220 lbs/in3in ID, 4 in length 40 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.