Swift Flat Wire Linear Rate Bump Springs 600 lbs/in Flat Track Motorcycle Springs Swift Sport Springs 08-15 Infiniti

Swift Sport Springs 08-15 Infiniti G37 X SEDAN / Q40 AWD NV36 4N907 Spring Rate Drop Front Rear Front Rear Kg/mm Kg/mm Inch Inch 8

7 inch length

70mm ID Adapter kit comes with an adapter and 2 metal washer sheets (1 kit for 1 spring)

550 lbs/in Barrel Type

325 lbs/in Barrel Type

Swift Flat Wire Linear Rate Bump Springs 600 lbs/in Flat Track Motorcycle Springs Swift Sport Springs 08-15 InfinitiFlat Wire Linear Rate Bump Springs 600 lbs in Swift Bump Springs are made from a proprietary material. 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.