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Old 09-12-12, 09:45 AM
  #22  
cycle_maven
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Ultegra had three different bottom brackets in the modern age (9-speed and higher). There were Octalink1, Octalink2 and external bearing 2-piece. So, make sure you get the right BB for your triple crank. Octalink1 had shorter splines than Octalink2, and often would strip out the crank arm if not properly installed or if installed on an Octalink2 BB. Those cranks end up on flea-bay often. I'd recommend against any used Octalink crank for that reason. Actually I stay away from used cranks, period.

Plus you'll need a triple "road" front derailleur. There are two styles lately, also- the newer ones for 52-39-30 have a larger cage than the older triple derailleurs for 52-42-30 cranks, and won't work so well with the latter type crank- they need to be set up too high to miss the middle ring and thus have slightly crummier shifting.
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