Shimano UN55 68 x 110mm Square Taper English Bottom Bracket - Walmart.com
Shimano BB-UN55 Bottom Bracket - YouTube
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 BB-UN55 68x113 JIS Square Taper Bottom Bracket, new/open box - bicycle parts - by owner - bike sale - craigslist
Shimano BB-UN55 Square Tapered Bike Crank Bottom Bracket 68 x 122mm NEW!!! | Far West Product Sales