Dec 30, 2003 4:52 PM
|Are Ultegra BB compatable with tiagra or 105 cranks?|
|Assuming you are talking current...||TFerguson|
Dec 30, 2003 4:57 PM
|The Ultegra BB is splined (Octalink). The 105 crank is splined and will fit. The Tiagra is a square tapered and will not fit.
If everything is older and square tapered, then they all will fit on the BB, but I'm not sure about spindle lengths.