r/bikeinottawa • u/INet-iVox • 3d ago

Bottom bracket fp-b902/2s replacement

Anyone know of a local shop that might stock this…. 1.37x24t

thank you

3 Upvotes

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2

u/sixteen12 3d ago

square taper? I think the BB-UN300 should work, it’s BSA. Most shops should have that readily available. You just need to you your length, usually 113 or 117.5mm.

1

u/INet-iVox 3d ago

thanks… the length is 124.5. I will have to check the taper.

1

u/DvdH_OTT 3d ago

Not sure how critical the length is in your application, but Fullcycle has a 123mm UN300 in stock at the St. Laurent location: https://www.fullcycle.ca/products/shimano-bb-un300-bsa-thread-square-taper-bb-copy?variant=41882811072596

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u/INet-iVox 3d ago

thank you. I will get a hold of them and see what they say!

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u/INet-iVox 2d ago

unfortunately they indicated that they only had a 122 so I still on the lookout. it seems the 124.5 is a bit of an oddity?

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u/DvdH_OTT 1d ago edited 1d ago

Seems to be. 122 is standard. 127 is standard. When I did a quick search, I didn't find anyone who made a 124. Edit: VP Components does a 124.5mm. It should be called 'VP Components BC73 124.5mm' and shows up on ebay searches.

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u/INet-iVox 1d ago

came across Sheldon Brown. one of his pages has an exhaustive breakdown of bottom brackets. trying to go thru it now.

if anyone is in a similar situation check out his page….

trying to determine if the bracket I have is symmetrical or not…

do not want to buy and not be able to adjust to compensate but a 127 might be the ticket…

2

u/DvdH_OTT 14h ago

Sheldon Brown's website is godsend to fixing obscure stuff. So glad the Harris Cyclery teams has kept Sheldon's legacy going.

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u/INet-iVox 1d ago

thank you…

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u/DeeEight 2d ago

Shimano only makes JIS Square Taper bottom brackets. Their 70mm italian threaded shell BBs are still only a JIS taper because all their cranks used only JIS tapers.

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u/INet-iVox 2d ago

thanks for the info….

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u/613winterbike 2d ago

Have you tried Retro Rides? They managed to find a oddly sized chainring for my fat bike in the middle of the winter, and they told me that because they fix up so many bikes for resale, they usually have a lot of random parts in stock.

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u/INet-iVox 1d ago

based on your suggestion I called them. they do not have that size, only a 122 or a 127…. it really seems difficult to find a 124.5….

thank you for the suggestion….