Sorry I don't get the point.. do you have an integrated cable routing or "classic" style with cable and hoses entering the frame on the top of the bottom tube?
The firespider store at Aliexpress has OD2 cockpits, different styles.. fully integrated also.
OD2 is your key word for searching at Aliexpress, it gives much better results than 31.8mm or 1 1/4"
Canyon does have 1 1/4" Cockpits, but expensive ..i guess you have a Canyon? There are not so many bike companies with 1 1/4"