Hey, I'm looking for a replacment for this bottom bracket, its a VP BC-73 BC 1.37X24T 122.5m, I found two shimanos the BB-UN26 and UN 55, but I noticed on the UN55,
SHIMANO XT Innenlager HOLLOWTECH II BSA (BC 1.37) 68 - bestbike Andreas Kommer
Bottom Bracket Standards and Terminology | Park Tool