Shimano Tiagra / Sora Hollowtech II models. Axle Type: Hollowtech II 24 mm spindle. Shimano Ultegra FC-6800 / FC-8000 / FC-8100. Genuine Shimano quality and precision engineering. Shimano 105 FC-5800 / FC-7000 / FC-7100.
SM-BB72-41
Shimano Ultegra 105 SM-BB72-41 Press Fit Hollowtech II 86.5mm Bottom Bracket
Bottom Bracket Type: Press-Fit, for Hollowtech II. Tiagra / Sora: Hollowtech II models. Ultegra: FC-6800, FC-R8000, FC-R8100. Works with the following Shimano cranksets and series 1 × Shimano SM-BB72-41 Bottom Bracket.