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it specifies a 50mm outer diameter headtube, and mine measures at 48mm
The OD mismatch is a cosmetic issue, not a functional one. The TH Industries parent drawing shows the rim of the cup as 49mm, 50mm is probably the maximum size which avoids interference between the hanger and the top of the head tube.
gbj_tester
@William.
Looking for a headset for a 2012 Ridley X-bow.
I think I need this FSA ORBIT Z-41CX :
https://shop4cross.de/komponenten/steuersatze/fsa-steuersatz-z-41cx.html
Which specifically mentions my frame as compatible. However, it specifies a 50mm outer diameter headtube, and mine measures at 48mm. I've looked everywhere for one that says 48mm. Any help appreciated