I believe the Thomson shims are 37mm and 40mm. The 37mm fits their own X2 & X4 stems. I am running a 40mm one with an ARX Team stem and it matches the height of the ARX perfectly.
@Regal started
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I believe the Thomson shims are 37mm and 40mm. The 37mm fits their own X2 & X4 stems. I am running a 40mm one with an ARX Team stem and it matches the height of the ARX perfectly.