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  1. #1
    RoadBikeReview Member
    Reputation: multirider's Avatar
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    When did BB30a become a "thing"?

    I'm planning to purchase a power meter for my SuperSix. Probably a Quarq. Need to figure out if my bike has a BB30 or a BB30a. Did some web searching yesterday, earliest references to BB30a are from 2014. But I found a reference from 2/2016 saying BB30a was new. So that shook my confidence.

    I went to the Cannondale web site, found the archives, looked through the road bike catalogs, and they all list the BB as a BB30, all the way up to the current models. So that was not helpful.

    My SuperSix is a 2012. Non-EVO. Is it likely to be a BB30? or might it be a BB30a?

  2. #2
    RoadBikeReview Member
    Reputation: bikerjulio's Avatar
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    I'm going from memory but I think BB30a first showed up on the Synapse in 2014. I remember a bike show video showing it's introduction.

    You can safely assume a 2012 SS is plain old BB30.

    Or just measure it. BB30 is 68 mm wide.
    Last edited by bikerjulio; 06-02-2017 at 01:50 PM.
    We just don’t realize the most significant moments of our lives when they’re happening
    Back then I thought “well there'll be other days”
    I didn’t realize that was the only day
    https://www.youtube.com/watch?v=Y9yrupye7B0

    There's sometimes a buggy.
    How many drivers does a buggy have?
    One.
    So let's just say I'm drivin' this buggy...
    and if you fix your attitude you can ride along with me.
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  3. #3
    aka 'Grover'
    Reputation: aussie_yeti's Avatar
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    The difference between the 2 is 5mm additional shell width on the non-drive side for the 'a' version.

    Any 30mm spindle Quarq is compatible with both. There is a 5mm spacer on the non-drive side.

    You install the crankset as it comes into bb30/pf30 (what you have)

    If it was bb30a/pf30a you simply remove the 5mm spacer then install as per the instructions.

    bb30a/pf30a came onto SuperSix EVO HM in 2016 and SuperSix EVO in 2017.

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