Hey benoitrdv
The springs Im using are the new white springs for the Yokomo BD. Up front is a green spring and in the rear is a pink spring. I dont have the spring rates yet but the ones on my car are like a med/Hard spring they are around the same rate as the HPI silver and Gold spring, this is just a guess.They seem to calm the car down some Im going to get more springs Im going to try the Orange springs they are a little heavy'er Im going to put those up front here is the Yokomo spring chart below