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SHIMANO RD-M9100 XTR Rear Derailleur

SHIMANO RD-M9100 XTR Rear Derailleur


Regular price MSRP 4,000.00
Regular price MSRP 6,240.00 Sale price MSRP 4,000.00
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XTR - Rear Derailleur - Long Cage - SHIMANO SHADOW RD+ - 12-speed

The XTR M9100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with SHIMANO's new 12-speed cassettes boosts range.


  • Enhance shifting performance
  • Optimized for new drive system
  • Silent drivetrain
  • Decreased rear derailleur tension at low gear position, to prevent high chain tension at low gear
  • Add bumper at rear derailleur pulley cage
  • Bigger 13T pulley
  • Low profile design
  • Low sprocket combination10-51T (12-speed)
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Technical Specification

SERIESXTR M9100 Series
ColorSeries color
Average weight240
Remarksw/Bumper on pully cage
Rear speeds12
Compatible chainHG 12-speed
Top-normal spring type|SHIMANO SHADOW RD+
Mount|Direct attachment (conventional)
Max. front difference0T
Total capacity41T
Low sprocket|Max.51T
Low sprocket|Min.51T
Top sprocket|Max.10T
Top sprocket|Min.10T
Fluoric coated link bushings8
Pulley|Guide pulley bearingSealed Bearing
Pulley|Tension pulley bearingSealed bearing
Pulley|Sunken type pulley screw
B-axle|Hollow axle