Swift Round Wire Helper Springs 3" ID, 4" Length, 250 lbs/in nfera 25" 4130 chromoly tubing that

25" 4130 chromoly tubing that is slipped over a CNC machined threaded sleeve then TIG welded

Lower the vehicle within tolerance of each vehicle's usable stroke

2007+ Nissan R35 GT-R Rear Axle Set(Pair) O

C-Groove Motorsport face type

Swift Round Wire Helper Springs 3" ID, 4" Length, 250 lbs/in nfera 25" 4130 chromoly tubing that3in 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.