Shimano HollowTech II bottom bracket.
Set includes left and right hand cups, spacers, inner cover, and inner O-rings. The length of screw thread is increased to enable the fitment of BB mount chain devices if needed.
Light weight seal structure helps to remove vital grams, and the sealed cups keep out dirt and water for a simple maintenance free set up.
- Compatible with 83 mm shell
- Durable gold anodised finish
- Easy installation