- Genuine Shimano HollowTech II bottom bracket assembly
- 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
- For use with FC-MX70 / MX71 chainsets, 68 mm shell with short sleeve
- Durable anodised finish
- Easy installation
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