FrontRearSpring Rate (kg/mm)15F/9R

Thats what i found for the spring rates on the D2 RS coilovers.

And these are some of the features listed on their site.

- 36-Way adjustable rebound and dampening
- Monotube high pressure design for fade free performance
- Custom spring rates from 3 to 22 kg/mm
- Teflon coated spring perch
- Vehicle drops of up to 120mm, 90-100mm on some applications
- 6061 powder coated aluminum camber plates and upper pillow ball mounts
- Includes keys for ride height adjustment
- CNC machined
- Fully rebuildable and serviceable in the United States
- 1 year limited warranty