BB-UN55 vs BB-UN300; which is the better square taper bottom bracket? - YouTube
BB-UN55 vs BB-UN300 - which is the better square taper bottom bracket? - restoration.bike
Amazon.com : SHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS : Sports & Outdoors
Installing a Shimano Cartridge Bottom Bracket BB-UN300 Caloi T-Type Part 01 - YouTube
Amazon.com : SHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS : Sports & Outdoors
Trying to install a BB-UN300 to an beginning of 90s Peugeot Europe Express Reynolds steel frame. The driveside of the BB goes in easily although not completeley (why?) but the non-driveside thread
BB-UN300 drive side won't thread in (counter-clockwise to tighten)! Driving me nutz. The non-drive side threads just fine (clockwise to tighten). What's happening here? : r/bikewrench
Shimano Shimano BB-UN300 Bottom Bracket - English, 68 x 122.5mm Spindle, Square Taper JIS, 47.5mm Chainline - Dynamite Bike Lab