Special direct mount hanger. Increases the rigidity of rear derailleur by improving the shift accuracy in the critical situations. It also redices the overall weight by a few grams while easing the wheel changing operations.
Disc Brake bikes only
Shimano DuraAce 9100/9150, Shimano Ultegra 8000/8050
Special direct mount hanger. Increases the rigidity of rear derailleur by improving the shift accura..
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