START WITH EAGLEThis new NX Eagle 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 Eagle's overall smooth-pedalling feel. The Type-3 ROLLER BEARING CLUTCH provides quiet, consistent performance and durability.THINGS TO REMEMBER Eagle technology provides an expanded, optimum, gear range making you fast on the flats, giving you control on the climbs and unleashing your speed on the descents. Eagle is a complete drivetrain system that was developed to be an integrated high-performance ecosystem. The engineering and testing that went into the development provide for maximum performance, safety, and long-term durability to ensure a great consumer ride experience. We guarantee this performance when Eagle drivetrains are used as a complete ecosystem. For additional information, please contact your SRAM Sales Contact.FEATURES AND BENEFITS Completely new rear derailleur incorporating our proven X-HORIZON design and new Type-3 ROLLER BEARING CLUTCH technology. Eagle ecosystem-engineered mounting system and CAGE LOCK positioning add robustness. Eagle pulley technology provides greater efficiency, crisper shifting and quieter operation.SPECIFICATIONSSpeed (RD): 12sCable pull ratio: X-actuationCage (RD): LongMax tooth: 50Colour (RD): BlackPulley bearings material: SteelCage material (RD): Steel