I feel its important to spread the word about this in case people are considering buying these springs as advertised as a "great deal". I was sucked into the hype by JM auto which is a sponsored store over on CSS which was advertising the sale of D2 springs and shipping Ksport springs instead as a "substitute".
Ordered the springs back on the 13th of september and received a call from JM auto that they were unable to get the springs and that they wanted my permission to send a set of KSPORT springs which were "made by the same oem as D2". I was assured that these springs were of exactly the same quality and would work great for my car. Received them about a week later after some communication about the delays of their drop shipment from ksport, and installed them promptly that weekend only to find out just how horrific these springs actually were.
I knew something was up when I went to install them because the front springs were about an inch taller then my stock SS/NA springs, but I did not expect the results to be this ridiculous. The car was sagging in the back about an inch or more lower then the front, making the car feel like it was pointing towards the sky. Highway driving was horrendous, the car was consistently slamming the bump stops going over bumps and above 70mph the car felt like it was achieving lift like an airplane with the angle it was sitting on.
I immediately contacted Ksport about the issue if there was something I should have done, like cut the bump stops since there was no instructions included, and no part numbers indicated on the springs themselves. This is the exact message I received back from Ksport customer service.
I am not familiar with the cobalt springs however I can say from the pictures you sent the car looks to be on an unlevel surface but looks equally lower front to back and does not appear to be raised in the front from your picture. Did you take a height level measurement from ground to center of fender well opening before and after?
Ksport USA - Performance Coilovers, Air Suspension and Brake Systems
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Now in case your wondering about the installation, all of the springs were installed with brand new shocks/struts, mounting hardware/bearings, etc.
Your probably thinking that the rear springs are upside down, well unfortunately they are not, small end of the spring is on the top in these pictures of the rear, and if you flip them upside down when the weight of the car is on them, they will bow out and try to leave their perches.
At this point I contacted JM Auto about receiving an exchange or refund on the springs, I wanted to work this out as amicably as possible as clearly there was something not right, and the car was dangerous to drive. I figure its possible they mixed the springs up in boxing and I have the wrong front springs and the correct rear springs. I went back and forth with the customer service for over a week, they claimed that they would be unable to accept a return on the springs unless ksport authorized it because I had already installed them. I provided all pictures they requested of the installation and springs and ride height, only to wind up having to file a charge back last week to get my money back. As they now refuse to even acknowledge my emails regarding the issue.
I went ahead half way through this and ordered a set of canuck motorsport springs, otherwise known as CM, because the ksports were losing spring rate so bad the car was continuing to drop in the rear, finally when I removed the springs and installed the CM springs, the ksports never even returned to their original height upon removal.
Im also much much happier with the ride quality and the stance now, CM springs are perfect, the ride is great, they handle great, and they lower the car just perfect enough for our terrible jersey roads.