You basically give them the Make, model, year of your motorcycle + How many burgers you eat a day (your weight) and they custom build the spring for you.
The other day I purchased from them springs for my GSX750ES.
The springs sat down in my workshop for more than a year untouched.
Today when I decided to continue with my restoration project I was disappointed to find that the springs are 1mm thicker than the stock ones and actually don't fit in.
How come ? What should I do ?
The option of having them machined in a local shop seems to me much less reasonable than having the springs + the stock ones (as reference) sent back to sonic springs...I somehow don't trust local shops in my area and I fear that the integrity and accuracy of the springs will be damaged.

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