Swift Standard Conventional Springs 9.5in length, 5.5 in OD, 325 lbs/in Swift Sport Springs 4in length

4in length

Further increasing the spring rate to enhance overall performance

Swift Sport Springs 09-15 Infiniti G37 X COUPE / Q60 AWD CKNV36 4N911

Swift Sport Springs 14+ Infiniti Q50 AWD NV37 4N910 (Red Sport Included)

Swift Standard Conventional Springs 9.5in length, 5.5 in OD, 325 lbs/in Swift Sport Springs 4in length9. 5in length, 5. 5 in OD, 325 lbs in Swift Standard Coilover Springs are made from a proprietary (H5S. TW.) Material. This allows Swift Springs to manufacture a spring that is has more stroke, increased traction and handling as well as a spring with less coils, resulting in a lighter spring with less unsprung weight. The same springs are used in Super GT, Formula Nippon, F3, F3000, Super Taikyu, IMSA, Pirelli World Challenge, Rally America, VLN, Le