• Why bother about those 2,5 mm? I have several bikes (including a track bike) and I switch without any problem from 165 to 170, 172.5 or even 175 mm cranks. All my road bikes are ridden for rides up to 5 hrs and I have one leg 15 mm shorter than the other. So if I don't get any knee issues, nobody will. ;-)

    Throw away that 5700, you can have my (used) 6600 for free.

  • On my track bike I also have 165. At some point was riding 172.5 and more recently 171 sugino cranks. Sugino felt slower and I preffered to have my pedals bit higher from ground. Guess I got used to short cranks.

    Will pm you about 6600. :)

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