Originally Posted by
Hvergelmir
Thanks for the quick response. I wasn't thinking it would magically unthread my headset but I probably described it wrong, haha.
So - long story short, I get the BBB extender and the stem and I'm good to go? The spacers are purely there for looks? Thanks again!
Yeah, that's all you need.
I'm just pedantic, almost everybody calls them threadless stems; they were invented to be used on bikes with threadless headsets. But you're not really doing a "threadless conversion", that's all.
Spacers are necessary on actual threadless systems so the headset can be adjusted, on an adapter like you're thinking they would serve no purpose.