Hi, I need some help to change my crankset. I recently purchase a bike with all Ultegra components but the crankset is FSA Gossamer Compact 50/34 Crankset and FSA-mega-Expo BB. I would like to replace the Crankset with either to standard or Compact Ultegra 6700. What size BB would I need in order to replace the original BB? Can I change that to Ultegra BB30? Or is it better to go with other options for Crankset?
Thanks in advance