So you've got a 1¼" steerer on your forks and want to replace the stem that came with it?
Yes, exactly that! This tube is thicker wall than the one on the stem, so I just need to lick it open a little at the top with a reamer to fit the top cap. Pretty sure we’ve got an adjustable one upstairs so I can do it by hand.
A standard ahead 1⅛" top cap might work too (instead of reaming) - it will overhang a little bit I guess - but I suppose they're not intended to take quite as much force as a proper one off a quill stem...
Yes, exactly that! This tube is thicker wall than the one on the stem, so I just need to lick it open a little at the top with a reamer to fit the top cap. Pretty sure we’ve got an adjustable one upstairs so I can do it by hand.