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and smooth modulation
Mesh Construction Keeps The Foot Cool
keeping your drivetrain in top shape for optimal performance
enhanced power transfer
making them ideal for both competitive and everyday cycling
Shimano BB-UN300-K Square Type Bottom Bracket Featured and smooth modulationThe 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