*Free shipping on orders over $99

Free Shipping Policy

Free Shipping applies to all orders placed for $99 and above
(pre-tax value). Some restrictions apply:

  • Offer valid in the Lower 48 States only
  • Excludes Complete Bicycles, Framesets, and some other oversize items
  • Excludes certain sale items


Equipment > Components > Derailleurs > Mountain - Rear


The Shimano XTR RD-M9000 rear derailleur is the pinnacle of mountain bike rear derailleur design. Its sculpted form could be easily placed in an art museum but is really a product of years of refinement geared toward the ultimate in shifting performance on all frame types from hardtail to full suspension plus more durability and of course low weight.

This effort is even more low profile the previous Shadow Plus derailleurs meaning it is less likely to catch brush, sticks or rocks on a tight trail than can sometimes lead to disaster. The clutch lever has been moved with the clutch position pointing down for more room/better compatibility on some frames. Speaking of the clutch, it is now more easily adjusted externally with just an Allen wrench. This make is easier to tune - adding more tension for bumpy, rough trails and reducing chain tension for a lighter shifting action on less gnarly terrain.

Shimano has tweaked the derailleur geometry in terms of an improved slant angle so the chain sits closer to all the cassette cogs through the entire 11-40 ratio. Chain/cog engagement is further enhanced by moving the upper guide pulley forward. The big benefit here is no ghost shifting on full suspensions - even on the super steep stuff.

Select the GS medium cage version for single/double setups and the SGS long cage for use with triple cranks.

Return to Top

  • 229 grams actual weight
  • New Shadow design with optimized slant angle
  • Chain stabilizer with easy adjustment
  • Efficient pulley teeth design for better shifting and smoother driving
  • Carbon plate for reduced weight
Return to Top