Washer on the drive side of Shimano UN300 BB? | Retrobike
BB-UN55 vs BB-UN300 - which is the better square taper bottom bracket? - restoration.bike
Shimano UN300 BSA axle on 68x117 mm, without square screws - MTBIKER.shop
Finally got around to replacing a UN26 BB with a UN300. I was shocked at how decent this thing is for $20. Bearings are the same size carts as Phil Wood. But
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
Amazon.com : SHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS : Sports & Outdoors
Shimano BB-UN300 Square Taper Bottom Bracket – The Bikesmiths
SHIMANO TOURNEY BB-UN300 MTB Bike Bottom Bracket Square Type 68MM UN26 | eBay