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Shimano XTR 12-Speed Rear Derailleur SGS Long Cage

MSP £215.00 Save 9%
XTR 12-Speed Rear Derailleur SGS Long Cage
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Product ID: 1033900

The SGS long cage RD-M9100XTR 12-speed Rear Derailleur from Shimano is specifically intended for use with single-ring 12-speed drivetrains.

This long cage version will cope with cassettes with up to 51 teeth and utilises a chain stabilising switch that prevents the derailleur from bouncing on rough ground and causing chainslap.

Shimano XTR 12-speed Rear Derailleur SGS Long Cage

The XTR 12-speed SGS Long Cage Rear Derailleur is the pinnacle of Shimano’s mechanical off-road groupset range. It combines low weight with unrivalled performance and a number of clever features. The direct cable routing prevents any snagging and the combination of carbon and alloy in the cage construction balances weight with stiffness for optimum performance. The chain stabilising switch controls the derailleur on rough ground to prevent chain slap and keep the drivetrain quiet, an aim that is furthered by the use of a rubber bumper on the pulley cage. Oversized pulley wheels with sealed bearings increase durability and shifting accuracy.


  • RD-M9100 XTR Shadow Plus 12-speed rear derailleur for the ultimate in shifting performance and durability
  • Shadow plus features a super low profile design and optimised slant angle for super light shifting action
  • Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
  • Single tension spring prevents contact with the chainstay resulting in a silent ride
  • Rubber bumper on pulley cage for added silent drive
  • 13T pulleys and decreased derailleur tension prevent high chain tension in low gears
  • Direct cable routing prevents snagging from any trailside hazards
  • Full carbon fibre outer pulley cage saves weight while alloy inner cage increases rigidity
  • Cold forged wide alloy links and pivot body
  • Four fluorine-coated link pin bushings
  • Strong return spring for a positive shifting feel
  • Specifically designed to work with XTR M9100 12-speed 1x drivetrains
  • Durable sealed 13T bearing pulleys for low friction
  • Top normal spring uses the spring to select higher gears
  • Maximum low sprocket: 51T (1x 12-speed)
  • 41T capacity SGS cage
  • Claimed average weight: 240 grams

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