Replacement T-Spring for nodels KJ-XR3 and KJarmstrong XR. It is also compatible with:
- KJ Pro series (as a softer T-Spring option)
- older XR series models

This T-Spring model features:
1. the new 4 TwinTurbos System (improve balance & rebound)
2. the new SRS (Safety Release System).
3. 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.