I'm looking for the model number and/or maybe info on where to get one. I believe that this is track specific.
Sorry for the low quality pic.
looks like one of their TT rings...not sure on the cranks. DuraAce for sure though if they are Shimano cranks
I would have said the TT rings as well, but those are 130 BCD
Yeah, it does look like one of their TT rings. But, I saw it on the bike of a messenger in Baltimore that is known for having dope track equipment. That's why I'm guessing (and hoping) that it may be a track specific ring instead of a 9 speed TT ring.Originally Posted by 
throw this question into the Track forum if the rider, indeed, has dope track "shhit"
Something about this statement makes me want to have as many heavy, high-maintenance gears as possible, STAT....Originally Posted by carleton
Maybe it's the picture, but to me it looks oddly elliptical as if it were a Biopace ring.
Ah. Well, never mind my comment then.Originally Posted by carleton
I'm glad that this is being discussed. I have been wondering about this chainring ever since seeing these pictures on Cycling News. The second image clearly shows champagne 75's which only come in 144. Also, I don't see any of the ramp pins normally seen on the 130 bcd 3/32 shimano tt type.
So I speculate that this is indeed a 144 bcd track chainring. I mean clearly the teams and this messenger are not modifying the bolt patterns on the chainrings. Also, and this is a moot point because of the Sugino pic, but why encounter chainline issues using the old dura ace double road crank on a track bike-with all 3/32 no less...
Euro-Asia, which imports the normal Shimano chainrings does not have this enigma on their website. Sorry I don't have any specifics but I thought I might help out a little.
Keep us posted