Shell | Bottom Bracketsfrom 24 to 31
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from 24 to 31 Bottom Brackets
The Shimano EXTERNAL Road Bike Bottom Bracket BB-RS500 comes with 2X Tiagra Bottom Bracket Cups, BB-RS500. It is designed for a 68mm x 18 width and is compatible with male threading systems.
Cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage - Sealed cups keep out dirt and water - Maintenance free - Maintenance free - Easy press-fit installation
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