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Aerozine External Bottom Bracket with Steel Bearings for Road 68 mm

£12.99 Please note this product has selling restrictions to your country. was
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SJS Cycles part number : 
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Questions & Answers (1) Q & A
- BSA 68mm with steel bearings, left and right aluminum bearing cups
- Compatible with all conventional BB24 cranks manufactured under Shimano specifications (FSA, Race Face, Rotor etc.)
- Road version
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Questions & Answers (1)
Bb Widths
23 Mar 2017

I want to convert all my bikes to external threaded BB cups but I have both 73mm and 68mm BBs. I had thought that this type of BB was compatible with both 68mm and 73mm BB widths but some of them are advertised as 68mm only. Is it the case that I have to look specifically for 68/73 compatible ones or do I have to get individual 73mm and 68mm systems?

It depends on what type of cranks you are running, if you want to run road cranks then you require a road specific 68mm only bottom bracket. If you want to run MTB cranks then you need to order a bottom bracket that can do both 73 and 68mm.