Shimano Dur-Ace SM-BB92-41B BB86.5mm Mid Bearing

Shimano Dura-Ace Sm-Bb92-41B Road Center Hub Black

Shimano Dura-Ace SM-BB92-41B Press Fit type bottom bracket
.Bottom bracket with small ball bearings for lightness
.Better sealing with new gasket structure
.Weight:54gr
.New hub design, low overall weight.
The .Pressfit 86 bottom bracket is available with certain dimensions (hub size 86x41mm) for the new large size BB standard.
All Shimano HOLLOWTECH-II ROAD CHAINS with .24mm spindle are compatible with this hub.