What brand is the bike @hobbybike? Appears to be a vintage frame. I have vintage GT's. Just wondering if the bottom bracket situation is at all similar. GT Outpost Trail & GT Palomar, both large mtbs.
Thanks for the comment 👍 ! No clue what make/model but it can't be too old since the fork is threadless, but old enough to be heavier steel; probs early 2000s. This one has the standard 68mm BB shell, even though the BB is labelled BB73 @ 4:17. One thing distinctive about older GT models is the extended seat stay at the seatpost/TT area, which this frame lacks.