X01 rear derailleur X-Horizon has gained much of the technology used in XX1. The larger surface area of the upper section of the carriage and its appropriate profiling allows automatic and fast reduction of chain play. The derailleur's 12-tooth sprockets made with X-Sync™ technology guarantee minimal chain friction. Of course, the derailleur uses Rolling Bearing Clutch™ and Cage Lock™ systems, which enable stable drive operation in all conditions
part number 00.7518.064.000
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