Shimano SM-BB72-41B Ultegra Bottom Bracket

SHIMANO ULTEGRA - Bottom Bracket - Press Fit - HOLLOWTECH II - 86.5 mm shell widthWith reliable SHIMANO bearings and seals, the SHIMANO ULTEGRA bottom bracket has a long service life.FEATURES:a Optimum power transfera Lightweight maintains efficiencya DURA-ACE proven 4-arm design: Same stiffness and lighter weighta 14 g lighter weight and half the friction of the SM-BB6700, while maintaining the same durabilitya Variety choice of gearing: 53-39T/52-36T/50-34T/46-36Ta Weight: 69 g