- Genuine Shimano HollowTech II bottom bracket assembly
- Length of screw thread is increased to enable the fitment of chain devices
- Set includes left and right hand cups, spacers, inner cover, and inner O-rings
- Light weight seal structure helps to remove vital grams
- Sealed cups keep out dirt and water
- Maintenance free
- Compatible with 68 mm and 73 mm shell
- Durable gold anodised finish
- Easy installation
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