BTW the Ksport springs that come with the CST010-KP Kontrol Pro are 180mm in length (not sure why the front ones are marked 14-13 as opposed to just 14, 13, or 13.5). Photos attached.
The entire company is at the SEMA convention this week so does not answer calls.
Ok that makes sense (that they are at SEMA, no answer so far to chat/call)
Your pics look different on the bottom threaded portion. Mine are the same for front and back, you are instructed to just thread them in at different amounts. The ones marked Rear were threaded much less out of the box, making them longer than the front which is expected.
I'm afraid I got 4 pairs of front springs (14k), or the left and right side of the car has different rate springs
. It's not horrible, but once ksport can answer I'll decide what to do. Gut feeling is still go with 12k front and 10k rear to make it a little more comfortable and get rid of harmonics/pogo. A softer rear may also help with some squat/traction. As Robotech said, the shocks are valved for certain rate springs - don't want it to blow out or bottom out.
180mm is probably fine, they don't have a lot of travel anyway.
The bracing will likely change the chassis frequency which is why everyone loves them. I'll get the bundle soon, it's finally cool out