Velobase has it as 144bcd
VeloBase.com - Component: SunTour CW-5000, Superbe Pro
Hopefully the hanger will straighten without breaking. Someone may chime in the right way to do it. I'm thinking heating it first but I really don't know.
I honestly am a bit cramped on mine in the drops but am struggling with swapping in the proper fitting stem and wider bars or leaving it. If I do change them I will keep the originals.
I'd say a good tubular setup would easily put these in the 21 lb range.