I've got an eibach spring on my 90 kx500 shock I just had rebuilt. I just bought the bike, and the spring came on the shock when I bought it. My problem is the numbers are half worn off. I went to the eibach site to try and identify the part number but it looks like I'm one number short. I wonder if they changed thier part numbers over the years? I know the spring has got to be at least 4 years old, more likely even older. From what i can make out, it looks like the number may be 82.623.2
The 8, 6 and 3 are the hardest to make out, the 2's are definitely 2's