Thank you all for your input.

Yes, I’m trying to build the frame up using my parts bin. I have other stems however the mutant is 1” threadless and so is the frame. The odds of having a chance to use it are pretty slim indeed!

Anyway, my primary question is about s negative rise stem and a maximum safe stack height.

The steerer is steel.

Does anyone know about using a negative rise stem on a steel steerer at say 100mm?

For a quill this wouldn’t be an issue so I’m not sure why it is on threadless steel steerer.

I don’t plan to flip the stem I just thought his response didn’t make much sense.

thanks again!

oh, and to Masi, 30mm max stack height is only important on carbon steerer.