Shimano BB-RS500 Road Press Fit Bottom complete press-fit assembly for Shimano HollowTech II road cranks.  The 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