Thought about posting this in "Tech", but you guys are the ones who would know... if anyone does...

On my ERS's, the spring rates are listed at the end of a long number resembling an IP address, like 238.147.0400 = 400 lb rates.

A friend just purchased the GC kit with Eibach Race springs. The springs were identical to all other ERS's I've seen, except that they had no such number printed on them. He bought them on sale from a speed shop that had no idea what the rates were. However, there is a 5 or 6 digit number printed on the springs like 54738 or something. Can anyone provide insight as to why these springs don't have an "IP address" like mine do? (I'll call Eibach when I get a chance)

 

The only thing I can think of is that it is a "lot number" (i.e. a set of springs from Eibach production batch number 54738) of a very common size/rate of spring, like 2.25x8"/350# or whatever. Eibach (or Ground Control) should be able to translate it for him easily.

I'm sure that didn't help much

Jon

 

0700.250.0500

7 inches long - 2.5 inches round - 500 pound.

Pretty simple

 

It is simple but that wasn't his question. GC buys a bunch of springs for their kits. They don't want every off-shore company to copy their stuff. I believe the #'s on the springs is for their in house identification purposes. If you do some searches, you might come up with the spring rates. The question of what rates are actually used has come up many times before. I know that they do use different rates for different applications. Calling GC would give you the best info. HTH

 

Matthewk, I believe his question was that he doesn't have that number. He does have the one that on your picture is located next to the Eibach logo (53851) - probably a batch number as Jon suggested.
Oh, and the 2.5 inch is the inner diameter (you did not make that clear) of the spring IIRC.