Shimano SM-BB72-41B Ultegra Bottom Bracket Pole Accessories Simply stronger

Simply stronger

Tested to the limit:

easy to maintain

Main:   bluesign®-approved recycled 100D x 210D wave check high-tenacity nylon

Shimano SM-BB72-41B Ultegra Bottom Bracket Pole Accessories Simply strongerSHIMANO 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:Optimum power transferLightweight maintains efficiencyDURA ACE proven 4 arm design: Same stiffness and lighter weight14 g lighter weight and half the friction of the SM BB6700, while maintaining the same durabilityVariety choice of gearing: 53 39T 52 36T 50 34T 46