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  1. #1
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    PF30 for 24mm Shimano cranks: lightweight option? 9er AIR RDO build

    Hello all. I'm building a Niner Air RDO, and can't seem to find a lightweight option for the PF30 bb with a shimano crankset! I'm a little overwhelmed by the weight of these things. I'm not a total weight weenie, but isn't there a plastic pf30 option for 24mm?

    https://wheelsmfg.com/bottom-bracket...ano-black.html

    Anyway, I'd greatly appreciate any help with this leading to options.

    Cheers!

  2. #2
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  3. #3
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    I helped a friend install some similar plastic shims for Ultegra into a pf30 (iirc it was pf30). There's a little drag, I wasn't really happy with the fit. If it doesn't hold up, we might try something like this, - there's quite a few different examples, not this one in particular or even from China, https://www.ebay.com/itm/PF30-24-Ada...item1a5c6bae5b
    skidding is the signature of the novice; learn how to use your brakes.

  4. #4
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    Reputation: frdfandc's Avatar
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    He needs Press Fit not BB30.

    Here is what you need for Shimano 24mm spindle.

    https://wheelsmfg.com/bottom-bracket...ano-black.html

  5. #5
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    Quote Originally Posted by frdfandc View Post
    He needs Press Fit not BB30.

    Here is what you need for Shimano 24mm spindle.

    https://wheelsmfg.com/bottom-bracket...ano-black.html
    He posted that....and wants something lighter. What I posted is lighter and fits

  6. #6
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    Thanks everyone, but I was trying to find a lightweight solution. Adding spacers or end plugs is a "there, I fixed it" solution.

    I think that PF30 with 24mm is just heavier than most.

  7. #7
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    Reputation: sgltrak's Avatar
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    When I got my AIR9 RDO frame second hand it already had these installed. It came from a Niner employee, but I don't know if it is the recommended solution from Niner.
    I've put about 1800 miles on it with 3 different cranksets since I picked it up and have not experienced any problems with this solution.

    PF30 for 24mm Shimano cranks: lightweight option? 9er AIR RDO build-1203182048.jpg

  8. #8
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    PF30 for 24mm Shimano cranks: lightweight option? 9er AIR RDO build

    Not sure I’d be dying to put plastic cups in my frame as a reliable bottom bracket. Are these aluminum cups “really” too heavy? They don’t thread together like the one you linked but they’re top notch quality and I’m certain with proper installation will never creak.
    https://www.kogel.cc/collections/pre...imano-cranks-1
    If you want lightweight, get XX1 DUB cranks. They gotta be over 100g lighter than whatever Shimano cranks/rings you have now.

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