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keeping your drivetrain in top shape for optimal performance
Whether you're commuting to work
enhanced power transfer
and every stretch of road
Shimano BB-UN300-K Square Type Bottom Bracket Featured keeping your drivetrain in topThe Shimano BB UN300 K is a durable square taper bottom bracket designed to deliver consistent performance. Its cartridge bearing system ensures smooth rotation and long lasting reliability, ideal for various cycling applications. Precise Compatibility: With a 68mm BSA threaded shell and a 122. 5mm spindle length, the BB UN300 K is compatible with a wide range of square taper cranksets. This bottom bracket also includes a 0. 7mm spacer for precise
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