With its "horizontal parallelogram" design and pulley offset, the SRAM XX1 X-HORIZON Rear Derailleur keeps the chain gap constant across all 11 gears, providing quick, precise shifts. 

By limiting all movement to the horizontal axis, this design is faster, reduces shift force and eliminates ghost shifting.

ROLLER BEARING CLUTCH™ technology reduces bounce and chain slap.

CAGE LOCK™ technology makes wheel removal and installation easier than ever before.

Paired with the XX1 shifter, the X-HORIZON™ rear derailleur forms the backbone of X-ACTUATION™ technology for ultra smooth shifting action.

Features:

• X-HORIZON™ design reduces shift force, ghost shifting and chain slap
• 12-tooth X-SYNC™ pulley wheels
• Large upper pulley offset automatically adjusts chain gap
• Ceramic bearings
• Carbon cage

Product Specifications:

• Speed (RD)    11
• Cable pull ratio    X-actuation
• Cage (RD)    Long
• Max tooth    42
• Color (RD)    Black
• Pulley bearings material    Ceramic
• Cage material (RD)    Carbon
• Drivetrain Configuration    1x
• Communication Protocol    n/a
• Shift Technology    X-Actuation
• Chain Technology    11 Speed Powerchain
• Weight (g)    245

Vendor Item No:

• 00.7518.061.000 (Red)
• 00.7518.061.001 (Black)