R Ralph Kent Retro Newbie Dec 10, 2023 #1 What exactly is this small protuberence? I've seen it on the odd frame on the inside of the steerer tube but I've no idea what it's for. Attachments Screenshot 2023-12-10 110835.png 11.4 KB · Views: 8
What exactly is this small protuberence? I've seen it on the odd frame on the inside of the steerer tube but I've no idea what it's for.
