Sram - XX1 Eagle Black 1x12 Speed Rear Derailleur 277g

This new derailleur not only answers the Eagle™ drivetrain’s need for greater capacity, but is also the next evolution of our proven, 1x-specific X-HORIZON™ design.
The larger, 14-tooth X-SYNC™ lower pulley, allows 10- to 50-tooth cassette capacity in this compact design, and also adds to Eagle’s overall smooth-pedaling feel.
Our new, Type-3 ROLLER BEARING CLUTCH™ features a smoother torque curve for a quieter, more consistent operation and feel.
CAGE LOCK™ has been moved back and out of the way, protecting it from trail debris.
A redesigned, robust mounting system further improves the Eagle™ derailleur’s performance and overall durability.

Completely redesigned rear derailleur incorporating our proven X-HORIZON™ design and new Type-3 ROLLER BEARING CLUTCH™ technology
Re-engineered mounting system and repositioned CAGE LOCK™ add robustness
Eagle™ pulley technology provides greater efficiency, crisper shifting and quieter operation
Carbon cage and lightweight hardware make it light and tough

Speeds 12
Material forged aluminum and carbon fiber
Outer cage carbon fiber
Compatibility eagle™ 10-50t only
Inner cage forged aluminum
Spring titanium
Bearings stainless
Cage sizes eagle™
Mount options new improved b-bolt attachment improves rd durability and consistency.
Max tooth 50
Pulleys eagle™ chain compatible
Pull x-actuation™
Technology highlight(s) x-horizon™, x-actuation™, x-sync™, roller bearing clutch™, cage lock™
B knuckle all new b-bolt attachment method reduces noise and improves durability
Type 3 roller bearing clutch™

Weight: 277g.