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GXP and BB30 bbs
 

[Closed] GXP and BB30 bbs

Posts: 6
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Hopefully a quick Q.. but is there any difference for the cranks between a BB30 press fit BB and a regular one. I have an X1 chainset that came with a BB30 bottom bracket that I want to fit to a bike with a regular threaded 73mm bb shell - can I just buy a threaded GXP BB or will it require different cranks? I suspect it'll be OK.


 
Posted : 19/09/2014 11:56 am
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The spindles on the cranks are different.


 
Posted : 19/09/2014 12:02 pm
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Difference between cranks is BB30 is a 30mm axle and std shimano is 24mm (GXP crankset are 24mm tapering to 22mm?).
Off-hand I'm unaware of any BB that will fit a BB30 crankset to std threaded BB shell, it's normally the other way round that ppl want to do it.


 
Posted : 19/09/2014 12:17 pm
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Rotor make a BB which allows you to fit a BB30 crankset to a threaded HT2 frame.


 
Posted : 19/09/2014 12:24 pm
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boo. no new bike riding for me this weekend then.. cheers!


 
Posted : 19/09/2014 12:26 pm
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Raceface do a BB that will take 30mm spindles in a regular BB shell too.


 
Posted : 19/09/2014 12:37 pm
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well you live and learn... ๐Ÿ˜€


 
Posted : 19/09/2014 12:45 pm
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'tis ok. I will return these and wait for the right thing to come back.

in the mean time I can 'borrow' my other chainset with a hope fat/thin chainring on there..


 
Posted : 19/09/2014 12:48 pm