I'm reviving this old thread again. Surely by now someone has the JKS kit. I have been looking at JKS coils for over a year already. (My Re-build keeps getting pushed back by more important financial decisions).
In my research I have looked at OME, Savvy and even Nth Degree (Which I personally think is the real gold standard). Unfortunately, now that I am finally ready to spend my money, and I have made a firm decision to go with Nth Degree. They appear to be out of business... again. This appears to be something that has just happened in the past couple of months. So I am really hoping its just some kind of reorganizing, but we'll see.
So now I am back to looking at JKS again. (along with Synergy, Rock Krawler, and the above mentioned) What sold me on the Nth was that they had LJ specific progressive coils. (Well that and I have become a big fan of the whole approach that Jim Frens took in designing the Nth stuff) OME offers LJ linear coils, but no one other than Nth offers LJ progressives. This is important to me because of how much my weight load varies and how much I carry when I am loaded down. From I have read, the Savvy are a very soft progressive coil and I don't think they carry a load well. Others like Synergy and Metal Cloak appear to have dual rate coils that are designed simply to keep the spring in the perch when at full droop. They are not designed to carry additional load. So that brings me back to JKS again.
From my reading, the JKS springs have been designed for overlandering and those who occasionally load down their Jeeps. My research indicates that they ride at a weight range of 150lbs in front and 190lbs in the rear. They have a 2nd firmer rate of 220 front and 240 rear. It seems to me this might be a nice range to carry the extra weight of a loaded LJ. So they really sound like a nice spring. I think JKS has done some innovovative engineering in the past and they are a reliable company, even if all their products don't catch on. So it seems like we have a reliable company that produces reliable products. So, where are the reviews for the JKS suspensions?