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Bottom Bracket Shimano SM-BB71-41B Ultegra Press Fit
SHIMANO ULTEGRA - Bottom Bracket - Press Fit - HOLLOWTECH II - 86.5 mm shell width
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Optimum power transfer
Lightweight maintains efficiency
DURA-ACE proven 4-arm design: Same stiffness and lighter weight
14 g lighter weight and half the friction of the SM-BB6700, while maintaining the same durability
Variety choice of gearing: 53-39T/52-36T/50-34T/46-36T
Weight: 69 g
Compatibility: Dura-Ace, Ultegra, 105
ISMBB7141B
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