Shimano XTR bottom bracket English Thread Type for 68-73mm shells.
Precision made bearings for this bottom bracket make it smoother than lower spec'd ones, with less friction to the unit, light weight cups and sleeve keep the dirt out and ensure it remains maintenance free for its life time.
- Shimano HollowTech II bottom bracket assembly
- Includes left and right cups, spacers, inner sleeve and inner O-rings
- Compatible with 68 mm and 73 mm shell
- BB spindle is integrated with right crank arm
- BB Thread Type English
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