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Every detail of the 11-speed X1 X-HORIZON™ rear derailleur is engineered for smooth, reliable shifting action-from the larger upper pulley offset to the 12-tooth X-SYNC™ pulley wheels. By eliminating unwanted chain movement, X-HORIZON™ shifts faster, puts an end to ghost shifting and reduces shift force and chain slap. And with CAGE LOCK™ technology, wheel removal and installation are easier than ever.

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  • This X1 rear derailleur is an integral part of the SRAM 1x™ drivetrain system. NO COMPROMISES.
  • X-HORIZON™ design reduces shift force and ghost shifting
  • Consistent chain gap on all cogs
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Cage (RD) Long
Cable pull ratio X-actuation
Speed (RD) 11s
Color (RD) Black
Cage material (RD) Aluminum
Pulley bearings material Steel
Max tooth 42
Weight (g) 256

X1 X-HORIZON™ Rear Derailleur