![Shimano BB UN55 Bisiklet Bisiklet Kare Alt Braketi 107 127.5mm Mühürlü Kartuş Rulman|Alt Braketler| - AliExpress Shimano BB UN55 Bisiklet Bisiklet Kare Alt Braketi 107 127.5mm Mühürlü Kartuş Rulman|Alt Braketler| - AliExpress](https://ae01.alicdn.com/kf/HTB1iGJqe3HqK1RjSZFgq6y7JXXaI.jpg)
Shimano BB UN55 Bisiklet Bisiklet Kare Alt Braketi 107 127.5mm Mühürlü Kartuş Rulman|Alt Braketler| - AliExpress
![What is the difference between this Shimano BB-UN50 and the BB-UN55 ? The former is hard to find for sale, the latter seems to be found everywhere : r/bikewrench What is the difference between this Shimano BB-UN50 and the BB-UN55 ? The former is hard to find for sale, the latter seems to be found everywhere : r/bikewrench](https://preview.redd.it/0rebayvg94851.jpg?width=640&crop=smart&auto=webp&s=2214088adb5fc8fa4040e00baa4f34208a1f8053)
What is the difference between this Shimano BB-UN50 and the BB-UN55 ? The former is hard to find for sale, the latter seems to be found everywhere : r/bikewrench
![SHIMANO Square Taper Bottom Bracket BB-UN55 | £24.00 | Bottom Brackets | Headsets | Bearings | Bottom Brackets | Spa Cycles SHIMANO Square Taper Bottom Bracket BB-UN55 | £24.00 | Bottom Brackets | Headsets | Bearings | Bottom Brackets | Spa Cycles](https://www.spacycles.co.uk/smsimg/32/2905-9123-full-bbun55-32.jpg)