Differences between Ground Control and TCKline Koni's?

[Low Level E30]

What are the differences between Ground Control Koni’s and TCKline Koni’s, for E30s?

I have heard:

- GC’s are shortened approx 2”, revalved approx 10% stiffer, and TOP-adjustable in the rear.

- TCKline’s are revalved stiffer to an unknown degree. I really haven’t found much info on these.

There has been some debate that GC does NOT provide top-adjustable rears for E30s, however. True or False?

Also, GC offers Koni’s for non-M E30s and for E30 M3s --- anyone know the difference?

[Nick325is]

GC front Konis are shortened 4 inches. They do sell top adjustable rears because I got mine from them. As far as the valving I am unsure.


nick

[rs4pro3]

supposedly the koni's GC sells are actualy just VW corroda G60 units, nothing special done to them except a spacer to take up space in the e30 housing.

[Low Level E30]

supposedly the koni's GC sells are actualy just VW corroda G60 units, nothing special done to them except a spacer to take up space in the e30 housing.

I have heard that mentioned before --- but I read somewhere, and I wish I could remember where, that that USED to be the case, and now the shocks are specific to E30s. I dunno.