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  1. #1
    RoadBikeReview Member
    Join Date
    May 2013

    Light weight options for a 9 speed crankset

    So here is my question. Clearly there is a lot of weight in the crankset between the crank and the bottom bracket. So my question, if you wanted to replace a 2000 era 9 speed crankset (Ultegra) with something lighter what would you do?

    Also, does anyone have experience with milling a set of Hollowtech crank arms?

    Thanks in advance


  2. #2
    wim is offline
    RoadBikeReview Member
    Join Date
    Feb 2005
    Dura-Ace 9-speed crank should be a little lighter than the Ultegra 9-speed crank.

    No experience with milling Hollowtech. But before you start grinding away, at least consider that the crank arms are, well, hollow. Cutaway of a Deore Hollowtech crank below.

  3. #3
    LC is offline
    RoadBikeReview Member
    Join Date
    Jan 2004

    Re: Light weight options for a 9 speed crankset

    You don't have to stick with 9 speed, 10 will work fine. The only significant weight saving would be carbon fiber cranks.

  4. #4
    Cranky Old Bastard
    Reputation: Randy99CL's Avatar
    Join Date
    Mar 2013
    Most newer cranksets are 9-10 (and sometimes 11) speed compatible.

    Milling the arms really isn't a good idea just because if one breaks it is often catastrophic. You'd have to remove a lot of metal to take much weight off.

    What does your crankset and BB weigh now?
    External bearing systems are generally lighter than the older styles but I'd weigh what you have now to see if it is worth the expense.

    Edit: I upgraded my bike with a FSA Energy MegaExo compact crank/BB that weighs 801g. Hollow alloy arms and on sale at Nashbar for $99.
    The newer Ultegra compact weighs a little more and costs twice as much.
    Last edited by Randy99CL; 06-19-2013 at 11:17 AM.
    "When you know absolutely nothing, anyone who knows 1% more than nothing sounds like an expert."

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