hi, currently I have a 100mm stem 6+- degre, I'M looking for a 110mm 0 degre or 100mm negative, so do I need something like 10 degre +- ??

and do you have an internet website where I can find that??

about ritchey, their stem is 73 or 84 degre, can I have a negative stem with that??

thanks

yes. the "flip it" that you often hear in this place is referring to the flipping of the stem (making it going negative)

73 is actually +/- 17 degree stem. as most headtubes make a 73 degree angle with the horizontal, a -17 degree from horizontal makes your stem parallel to the ground.

84 is actually +/- 6 degrees, which is what you have.

a zero degree stem is not gonna get you a stem parallel to the ground.

as for websites, here you go https://www.habcycles.com/fitting.html

okay so the best is a 73, I can flip the stem for a - 17.. I guess 73 is the biggest angle??

If you're looking for the stem to be parallel with the ground (0 or 180 degrees) get a +- 73 degree stem which is also the same as a +- 17 degree stem.

there are + 30 (so conversely, -30) degree stems. but i don't think that's what you want. the ritchey stems are great, and i like my -17 wcs. but make sure you do enough planks and stretching that you can actually be in a low position