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Upgrade to Shimano External BB on Langster?

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Upgrade to Shimano External BB on Langster?

Old 03-12-10, 07:07 AM
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Upgrade to Shimano External BB on Langster?

I've tried searching everywhere but to no avail..........is it possible to upgrade my BB to a shimano external BB on a 2009 langster? I can't find any info anywhere on whether or not the BB will thread in properly. CUrrent BB is a Sealed cartridge, square taper, 68mm x 103mm. I have a ultegra crank that I want to throw on.
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Old 03-12-10, 07:36 AM
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68mm is standard British threading. New BB must be also.
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Old 03-12-10, 07:54 AM
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It will go on fine assuming your cups are English threaded. You'll need to use the inside ring position to get a 42mm chainline.
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Old 03-12-10, 07:54 AM
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Originally Posted by shmee40
I've tried searching everywhere but to no avail..........is it possible to upgrade my BB to a shimano external BB on a 2009 langster? I can't find any info anywhere on whether or not the BB will thread in properly. CUrrent BB is a Sealed cartridge, square taper, 68mm x 103mm. I have a ultegra crank that I want to throw on.
Yes, the standard english shimano ext bb cups will be a straight drop in. Assuming there isn't horrible issues with BB facing on your bike, it should be ok.
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