Originally Posted by
HillRider
The shell width implies Italian threading but that's not a certainty. Is there any engraving on the current bb cups that might give us an idea of the threading?
I believe there is no threading. BB cups are pressed fit into the shell.
The bb on my frame looks identical to the above, hence different size.
I am looking to upgrade this bb to a much hassle free system. If I cannot i will have to do with a direct replacement but I cannot find a thompson bb with 45mm shell diameter.
Best Regards.
P.S: I will post some pictures when i get home from work.