XTR RD-M9050: Unrivaled shift performance and stability. Shimano’s XTR M9050 Di2 rear derailleur delivers unrivaled chain control and shift performance that doesn’t degrade over time. With Shimano Shadow RD+ clutch technology, the RD-M9050 is the ultimate mountain bike rear derailleur. Its damage. A refined geometry augments Shimano’s already legendary performance stability while system communication with the front derailleur makes Shimano Synchronized Shift a possibility
  • pretty_bullet.png Shifting motor responds instantly to rider input
  • pretty_bullet.png Available in SGS or GS versions
  • pretty_bullet.png Seamless gear changes
  • pretty_bullet.png Accurate chain position in every gear
  • pretty_bullet.png Consistent shifting in every gear combination
  • pretty_bullet.png New SHIMANO Synchronized Shift
  • pretty_bullet.png System communication with front derailleur
  • pretty_bullet.png Advantage in all conditions
  • pretty_bullet.png Electric wire transmission guarantees stable peformance
  • pretty_bullet.png Chain stabilizer with easy adjust
  • pretty_bullet.png Efficient pulley teeth design
  • pretty_bullet.png CFRP plate
  • pretty_bullet.png For 1x11 & 2x11: 42T-11T
  • pretty_bullet.png For 3x11: 40T-11T

Product Specs

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Model Number RD-M9050
Series XTR
Mount Type Direct
Maximum Sprocket 40T-11T
Minimum Sprocket 40T-11T
Front Difference 18T (SGS), 10T (GS)
Total Capacity 41T (SGS), 33T (GS)
Link Pin Bushings 4
Average Weight Weight: 289g (GS), 292g (SGS)