Description
The Park Tool BBT-59 is a precision CNC machined aluminum tool for the 41mm, 16-notch Shimano Ultegra 6800 external bottom bracket. It is compatible with a 3/8" drive so it can be used with your favorite torque or socket wrench.
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- Precision CNC machined aluminum external threaded BB cup tool
- Torque wrench compatible 3/8" drive
- 41mm OD cup
- Fits Ultegra BB6800, XT MT800
- In 2017 Park released BBT-59.2, with slight modifications, but no major changes