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enhanced power transfer
Whether you're commuting to work
and smooth modulation
making them ideal for both competitive and everyday cycling
and the GameChanger is your secret weapon in this battle
Shimano BB-UN300-K Square Type Bottom Bracket Featured enhanced power transferThe 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