Complete Ultegra level press-fit bottom bracket assembly for Shimano HollowTech II road cranks.
Cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage
Set includes left and right hand cups, inner cover, and inner O-rings
Sealed cups keep out dirt and water
Compatible with 86.5 mm shells
41 mm cup diameter
Easy press-fit installation
Art. Nr. ISMBB7241B