How important is the bottom bracket?- Mtbr.com
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  1. #1
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    How important is the bottom bracket?

    I ordered my crankset, SRAM X7, used and it doesn't come with the BB. I was looking at a new SRAM Team GXP BB for $40. I was also looking at the RWC "CH SERIES" CERAMIC HYBRID BB for $120 and Hopes for $114 including the Truvativ GXP conversion kit.

    So that just made me wonder, how much does the BB matter? All I have ever used to this point is whatever was on the bike when I bought it new. Never upgraded that component.
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  2. #2
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    Unless you're worried about the weight I don't think that it matters until it fails

    Then, as with most things, the more you pay then, the longer it will last. Whether the 100 one will last 5 times the life of a 20 is another matter....
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  3. #3
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    Ceramic bearings are a waste of money imo. Use an inexpensive BB until the bearings get gacked and replace the bearings with quality units from Enduro.



    GXP BOTTOM BRACKET BEARINGS FROM REAL WORLD CYCLING

  4. #4
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    Quote Originally Posted by AZ.MTNS View Post
    Ceramic bearings are a waste of money imo. Use an inexpensive BB until the bearings get gacked and replace the bearings with quality units from Enduro.



    GXP BOTTOM BRACKET BEARINGS FROM REAL WORLD CYCLING
    Yeah, the BB I was looking at, the RWC "CH SERIES" CERAMIC HYBRID, I wasn't actually looking at it because it had ceramic. It was the least expensive of the RWC complete BB options.

    I just wasn't sure how much difference there was in the actual BB. I figured bearing were definitely less quality in a cheaper BB and those could always be replaced. I do like the bling of the RWC for sure, but bling alone isn't worth an additional $80 to me.

    Thanks for the input.
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  5. #5
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    Ceramic bearings make the biggest difference in the hubs. Then the BB and pedals next. I personally dont think they are worth it for anything. Just get the standard GXP. I have one on my cross bike and it has seen a lot of mud and is still smooth. Did I mention cheap?
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