Swift-Tohatsu Springs Assist Spring Set with Spacers and Seats - ID60mm 6.0kgf/mm

These items are designed to be used in conjunction with the main spring on coilover suspension kits utilizing the same size inner diameter springs. Used to further dial in suspension characteristics for serious suspension tuning for rebounding the travel of the shock and preventing traction loss due to wheel lift during hard cornering. The best of both worlds with dynamic step linear rate. With higher spring rates than assist springs these items will also affect the overall spring rate of main coilover spring. Regardless of spring rate for assist spring the compressed height is static allowing for spring perch settings to remain unchanged maintaining the dialed in ride height. Get this and all your JDM at RHDJapan!!