Shimano Press Fit Bottom Bracket 86.5mmWith an advanced seal construction for smoother rotation, the DURA ACE is still lightweight at 54 grams. Bottom bracket with small ball bearings for lightweight Advanced seal construction for smoother rotation PRODUCT SPECIFICATION: Model No: SM BB92 41B Series: SHIMANO HOLLOWTECH II bottom bracket Press Fit type Press Fit bottom bracket shell width (mm): 86. 5 Small ball bearing Average weight: 54 Color: Series color
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