Swift Standard Conventional Springs 9.5in length, 5.5 in OD, 325 lbs/in Swift Sport Springs Swift Sport Springs 09-15 Infiniti

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

Further increasing the spring rate to enhance overall performance

Works with OEM airbox and most aftermarket intakes

Super Taikyu

Swift Standard Conventional Springs 9.5in length, 5.5 in OD, 325 lbs/in Swift Sport Springs Swift Sport Springs 09-15 Infiniti9. 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