Sora 3304 uses V2.
http://sheldonbrown.com/bbsize.html
There is no better Octalink BB than Shimano and Sora ES30 is fine, but any other V2 BB of the same dimensions will work.
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Stupidity got us into this mess - why can't it get us out?
- Will Rogers
Last edited by DMF; 05-07-10 at 10:49 AM.