I had 165 on my TT bike and swapped them out for 175 . Got PB's at 10 and 25 miles but i doubt it was to do with the cranks . The road bike has 170's . I cant tell the difference .
All my bikes are 172.5 except for my hybrid which is 175. Whilst I am pretty sure I can feel a difference I am also pretty sure it's down to the fact I know there is a difference so it could all be in my mind.
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