GP5000 Tire/Ouzo Pro Integrated
 

Does anyone know how large a tire (either GP4000 or GP5000, I can figure it out from there) an Ouzo Pro Integrated will take?

Mine will fit a true 25mm wide tire. a gp5000 25mm runs more or less true to size.

This seems to suggest otherwise. IOW, it depends largely on how wide your wheelset is. I assume not too wide though since this is about a rim braked bike.
https://www.bicyclerollingresistance...test#road-bike

OP.. do you have the bike/fork in question and the wheel, and another tire already on that wheel? If so.. what size is the inflated tire is on there and how much clearance is left? (time to get the ruler out).

I have GP5000 25mm on 23mm wide rims and the tire is almost 26mm wide.

A GP4000 is larger than a GP5000. Continental aligned their sizing with the ISO standard when they went to the 5000 model, apparently.

I don't have any experience with the Ouzo Pro Integrated, but I have experience with the regular OP model fork. It seems that there is variation between different forks; some have more clearance than others, due to length differences. I have one fork that has clearance for a 28, and another that looks identical that will only clear a 25. I'm not sure if this relates to production variation or what, I just know it's true.

It also is dependant on the color of the decals it seems.
White seems to take the largest and my green label will fit a true 27 with 10 sp campy brakes.