These Steeda Tender/Helper springs are soft springs are used on Coilover suspensions and can travel farther than the main Coilover Spring. When the suspension droops, these springs expand and take up the slack between the main spring and the spring perch. This keeps the chassis springs centered on the perch and prevents the ride height from suddenly changing. These short coils have very low spring rates and are coil bound when the suspension is loaded. They will not affect the rate of your main springs. Approximately 1/4 inches long when compressed.
Note: Sold as individual spring.