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How wide is a GXP B...
 

How wide is a GXP BB cup?

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Free Member
Topic starter
 

I'm planning an experiment on one of my bikes that involves a GXP crank. I need to know how wide a GXP BB cup is and can't find this information anywhere online despite googling.

I don't have one to check - if someone knows off the top of their head that'd be great, or would someone who has one to hand mind measuring the cups for me please?

 
Posted : 05/02/2025 8:53 am
 Yak
Full Member
 

43mm x 12mm ( ext. dims , approx by ruler).

 
Posted : 05/02/2025 9:04 am
Full Member
 

Genuine SRAM GXP is 12mm DS and 12.4mm NDS.  But a Chris King TF24 (which also does GXP) is 10.1mm DN/NDS - so the spacers are doing a lot.

 
Posted : 05/02/2025 9:26 am
Free Member
Topic starter
 

Perfect, thanks both of you. That information about the CK BB is particularly useful as it's exactly what I'm planning to use.

 
Posted : 05/02/2025 10:40 am

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