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With better sealing and rotation the Shimano Deore bottom bracket delivers high driving efficiency.
Compatiable with 68/73 bottom bracket shells.
Available in storeClose
Its 24 mm bearings (Hollowtech II) provide an optimum stiffness-to-weight ratio and rotational efficiency. The SM-BB52 BSA bottom bracket is available in a version for 68 and 73 mm shell widths and in a version for 83mm shell widths.
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