![SHIMANO BB-UN300 bottom bracket British thread, 68-113 mm, Multicoloured(Multicolor), One Size, EBBUN300B13X : Amazon.co.uk: Sports & Outdoors SHIMANO BB-UN300 bottom bracket British thread, 68-113 mm, Multicoloured(Multicolor), One Size, EBBUN300B13X : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/71RMNoIRjeL._AC_SL1500_.jpg)
SHIMANO BB-UN300 bottom bracket British thread, 68-113 mm, Multicoloured(Multicolor), One Size, EBBUN300B13X : Amazon.co.uk: Sports & Outdoors
![Bottom Bracket threading and other specifications for bikes with traditional three-piece cranksets by BikeRaceInfo Bottom Bracket threading and other specifications for bikes with traditional three-piece cranksets by BikeRaceInfo](https://bikeraceinfo.com/images-all/tech-images/bottom-bracket/campy-bb.jpg)
Bottom Bracket threading and other specifications for bikes with traditional three-piece cranksets by BikeRaceInfo
![Bottom Bracket,Bottom Brackets 30mm Press Fit 4 Bearing Bottom Bracket Thread Lock For 42x68/73mm Frame To 30 Crankset Bicycle For Road Bike MTB (Color : 1) : Amazon.co.uk: Sports & Outdoors Bottom Bracket,Bottom Brackets 30mm Press Fit 4 Bearing Bottom Bracket Thread Lock For 42x68/73mm Frame To 30 Crankset Bicycle For Road Bike MTB (Color : 1) : Amazon.co.uk: Sports & Outdoors](https://m.media-amazon.com/images/I/51J2NZieksS._AC_SY450_.jpg)