Ultegra level bottom bracket for Shimano Hollowtech II cranksets in press-fit bottom bracket shells.
With reliable SHIMANO bearings and seals, the Shimano Ultegra bottom bracket has a long service life.
The product weight specified is an approximate weight based on the manufacturer’s specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.
Specifications
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Weight: ~69 g |
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Gearing: 53-39T/52-36T/50-34T/46-36T |
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Mfg PartNum: ISMBB7241B |
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Bottom Bracket STD: PF24 |







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