HKS HIPERMAX R Series

When purchasing a full kit, you can change to your desired spring rate. (It is a spring that we handle, and the free length cannot be changed.)
However, the spring rate change that exceeds the recommended spring rate range for each model is not covered by the warranty.
Figures for vehicle height information are reference value data (compared to normal) based on combinations of full kit settings in HKS. The data varies depending on the individual differences and installation conditions of the vehicle.
In addition, the numbers in parentheses (upper limit to lower limit) indicate only the possible vehicle height adjustment range from the normal vehicle height, and are only reference values.
Please note that some vehicles may interfere with driving. We have set damper sets (front set, rear set, full set) for repair.
For details, please contact the store where you purchased the product or an HKS product dealer.
Specifications subject to change without notice.
For the conversion method of damping force [N] → [kgf], calculate the indicated value ÷ 9.8. (Example: 1700N÷9.8=173kgf)

For more details please go through the below link...
HKS HIPERMAX R Series