The SRAM NX Eagle 12 Speed 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 eagle's overall smooth-pedaling feel. The type-3 roller bearing clutch provides quiet, consistent performance and durability. 


Completely new rear derailleur incorporating sram's 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.


X-Horizon - The x-horizon rear derailleur's 'straight parallelogram' design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force. For quicker, more exact shifting, the large upper pulley offset design maintains a constant chain gap across all gears. 

X-Actuation - Developed specifically for sram x1, X-Actuation keeps shifting sharp and consistent across the entire cassette. Multi-adjustable trigger shifter. Matchmaker x compatible. 

Roller Bearing Clutch - Roller bearing clutch rear derailleurs deliver maximum drivetrain stability-even through the most punishing terrain. With roller bearing clutch technology, derailleur bounce and chain slap are eliminated without sacrificing precision. 

Cage Lock - With cage lock technology in the rear derailleur, wheel removal and installation-as well as chain installation-becomes faster and simpler. Just pushing the cage forward to create slack and lock it into place. 


Material: cage: steel, bearings: steel

Weight: approx. 339 gram (manufacturer spec)

Cage length: long

Largest sprocket: 50 teeth

Smallest sprocket: 10 teeth

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