I looked extensively to try to find the SLK 320 spring rates and was never able to find anything. The MB dealer didn't have the info, nor could I find it on the SLK sites.


You might try Donovan at Ground Control Systems in California. His company makes after market suspension packages for the SRT and NA XF. The springs have different rates than factory, and they use an adjustable shock. I bought the "Touring" version package and am having it installed tomorrow.