Shimano SM-BB72 Road-fit bottom bracket 41 mm diameter with inner cover, for 86.5 mm

From Shimano:

• 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
• Maintenance free
• Compatible with 86.5 mm shells
• 41 mm cup diameter
• Easy press-fit installation

• Bottom Bracket Type: Press Fit
• Colour: Black
• Discipline: Road