Originally Posted by
JohnDThompson
The stem "length" generally refers to the extension, or how far ahead of the steer tube the handlebar will sit.
The Nitto "Technomic" is a specialty stem, with a much longer than typical height so a rider can raise the bars higher than would otherwise be possible.
If you need a Technomic then either your frame is too small or you like a VERY upright riding position. I got one when I didn't know anything and it was so long it wouldn't go far enough into the head tube. A problem with a smaller frame so be careful about that.