Originally Posted by
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Soma is suggesting their Nitto UI-12 but I am having trouble picturing it. And I am not clear about the angle choices: 72 or 90.
Not familiar with the product but those sound like road stems; a 90 degree bend being a later road-type offering (slight rise when viewed in profile due to the right-angle stem being in a slanted steerer tube) while the 72 degree would be your typical flat/level stem (also viewed in profile). The latter type is frequently referred to as a "negative" number stem, like a -18 degree instead of 72 degree; 18 being the complement of 72 to total 90. Same thing, different description.