SRAM NX Eagle Rear Derailleur – 12 Speed Long Cage Black. The NX Eagle rear derailleur features the proven SRAM 1x-specific X-HORIZON design. The larger 14-tooth X-SYNC lower pulley easily facilitates 11- to 50- and 10- to 50-tooth cassette capacity and also adds to NX Eagles overall smooth-pedaling feel. The Type-3 ROLLER BEARING CLUTCH provides quiet consistent performance and durability.

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