Nitto Stem Model?
 

Does anyone know what model stem this is? Stamped on the quill next to the max height line is:

22.2 (0.875)
NITTO • JAPAN
U.0

I think it is "U.0" because the "O" in "NITTO" doesn't match, however I found a similar looking stem on ebay that was clearly stamped "U.Q" so maybe it is an "O"? I included below a photo of the front of the stem in case the shape is a cue.

Thank you for taking the time to read this!
John

https://cimg9.ibsrv.net/gimg/bikefor...0339945dd3.jpg https://cimg0.ibsrv.net/gimg/bikefor...9619fb8c8c.jpg https://cimg1.ibsrv.net/gimg/bikefor...16ff485bcd.jpg

Looks like the Dynamic to me. I believe it is based on the Specialized S-2 stem design.

I've got one that appears identical on my big red British bike...

https://www.flickr.com/photo_downloa...ret=71a9641148

darned if I recall the specifics on the quill... and it's not in reach right now.

However, I'm pretty sure that I got it from Rivendell, back in the day. This is from the 1996 Rivendell catalog. The Nitto Aero...


https://cimg9.ibsrv.net/gimg/bikefor...d1c94045d9.jpg

Presumably "Aero" is Nitto's terminology for the model, and not just Grant's.

Steve in Peoria

Interesting ad copy there, Grant preferring cones to wedges for quill stems. I thought wedges are safer? Is this a weight weenie thing to go along with the alumnum wedge?

A shot from the top would help as the Dynamic widens before it gets to the clamp.

I went back and looked at the catalog, and he does discuss the pro's and con's....

https://www.flickr.com/photo_downloa...ret=dd7058d4b3
high resolution version

Maybe he's seen more people damage a fork with a wedge? Just speculating, of course.

Steve in Peoria

when I looked up the Nitto Dynamic, the images all showed the "Dynamic" name forged into the side of the stem.
... or just "Nitto" on the extension... ebay.com/itm/326615443941

Not that there couldn't be versions w/o any text, I suppose...

Steve in Peoria