"Where did y'all read these were a lightweight Nitto Noodle?"
They were already out of production when I came in 2009. If I type "Nitto Soba Noodle" into the googler, I get hits to bike forums in 2007 discussing them. At that time they are talking about how the regular Noodle mod 177 is the heavier cheaper version, and the Soba Noodle is in Nittos "ultralight" flavor.
There are 9 of them in my garage right now. 8 are on bikes, and 1 is loose. 7 are Mod 177 Noodles, and 2 are the Soba Noodle. The shape is identical. I guess you'd just have to take my word for it. I'm kind of a Noodle zealot. Most of the 9 in my garage are 460mm and a couple are 440mm.
The loose bar is the model 177 regular Noodle. It has 460 stamped in the end and it measures 460mm center to center. The Soba Noodle that went on my new Roadeo had 460 stamped in the end and it also measures 460mm center to center. The regular Noodle has a "sleeve" in the middle, with embossed Nitto graphics into the metal of the sleeve. The Soba Noodle has a bulge in the middle, and the Nitto graphics are black ink or similar printing on the metal. My build notes indicate I weighed the Soba Noodle at 310g. The loose regular 460mm Noodle weighs 372g on the same gram scale just now.
Bill Lindsay
El Cerrito, CA