Replacement pair of T-Spring for models KJ-XR3. It is also compatible with:
KJ Pro series (as a softer T-Spring option)
Older XR series models

This T-Spring model features:
The new 4 Twin Turbo System (improve balance & rebound)
The new SRS (Safety Release System)
Customizing option: It is "Coil Spring Adapted" which means that you can attach the optional steel Coil Springs, to customize the compression resistance of your KJ.