So, I just bought a set of Tein Control Master Type Flex coil overs and they came with different springs. I'm not sure as to which ones they are and their spring rates. My guess would be that the prior owner wanted a stiffer setup and got stiffer springs. I don't want to blow up these coils and would like to get the proper springs for them. Correct me if I'm wrong but I thought these came with 8k/6k springs? So does anyone have 8k/6k springs they want to get rid of? I'm not expecting to find the Tein springs that came on these, so I'm pretty open to other brands if they're still the same spec. If anyone recognizes what springs these are, let me know. They're sitting in my Dad's garage until I go down there to install them .

 

P'me if you want to buy these off me. Used for 3 months. $60. Originally $99/spring
4kg Swift Springs feel like other branded 6kg.

 

These wouldn't cause it to ride too soft would it?

 

I'm not a 100% sure. I had them on cusco coilovers on my 240sx. It felt better than the 8k/6k cusco springs but the ride was still rough with 6k/4k setup.
They are more balanced, lighter, and better made than lots of other springs out there.

More info:
High Performance Sport Compact Sprints, Circuit Track Springs, Off Road Springs, Drag Racing Springs, Circle Track Springs by Swift Springs USA