asked by: bluemarvin Rear derailleur is SRAM 10-speed with text "Blackbox Ceramic Bearings" and "Exact Actuation" on outer cage. Looks like 11 teeth on top and bottom pulleys. Bike approximately 2011. Is this compatible? Thanks
anwered by: canteau If you have the Black Box pulleys, chances are you will need the pulleys for either the XX or X0 rear derailleur.
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