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- Precision engineered Dura-Ace 7700 bottom bracket for road Octalink splined system
- 22 mm diameter chrome-moly hollow pipe billet axle reduces weight
- Splined interface provides a more rigid crank assembly compared to tapered counterparts
- Compound bearing structure - ball and needle bearings support the spindle to reduce flex
- Maintenance-free sealed cartridge design prevents corrosion and is easy to install
- Average weight 173 g
Manufacturer's Code:
BB7700B09,
BB7700I09
Barcodes:
4524667007104,
4524667007111
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