Shimano XTR RD-M9000 11-speed Shadow Plus Rear Derailleur

The XTR RD-M9000 Rear Derailleur by Shimano – Refined technology
The XTR RD-M9000 rear derailleur has been equipped by Shimano with a shifting mechanism that refines and complements the proven Shadow Plus technology. It is now possible to choose between maximum chain stability and lowest possible operating forces. In addition, compared to previous models, the profile has been flattened again and the angle of attack optimised to prevent damage on the trail. Together with the other components that make up the Dyna-Sys11 system, the RD-M9000 performs reliably and smoothly. The inner cage of the rear derailleur is made of aluminium, the outer one of weight-saving carbon, as is some of the hardware. In the shorter version (GS) it is compatible with 2×11-speed and 1×11-speed gears and cassettes up to 11-42 or 11-46. The long version (SGS) can also be used for 3×11-speed drivetrains with 11-40 cassettes.
Specifications:Series:XTR M9000Application:Cross Country, All Mountain, EnduroGearing:11-speedMount:standard (Direct Mount compatible)Capacity:37 tooth (short), 45 tooth (long)Compatibility:Shimano MTB 11-speedCompatibility – Chains:HG-X11Technical Information:Derailleur Pulleys:11-toothOuter Cage Material:carbon (CFRP)Inner Cage Material:AluminiumOther Materials:aluminium, stainless steel, carbon (CFRP)Compatibility:Shifter:SL-M9000, SL-M8000, SL-M7000-11, SL-M5100Cassette:
short / GS: 1×11-speed: CS-M9001 (11-40 T), CS-M8000, CS-M7000-11 (11-40 T, 11-42 T, 11-46 T), CS-M5100-11 (11-42 T only)long / SGS: 1×11-speed: CS-M9001 (11-40 T), CS-M8000, CS-M7000-11 (11-40 T, 11-42 T, 11-46 T), CS-M5100-11 (11-42 T only)short / GS: 2×11-speed: CS-M8000, CS-M7000-11, CS-M5100-11 (only 11-42 T)long / SGS: 2×11-speed: CS-M8000, CS-M7000-11, CS-M5100-11 (only 11-42 T)long / SGS: 3×11-speed: CS-M9001, CS-M8000, CS-M7000-11 (only 11-40 T)Chain:CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500Features:Shadow design with optimised angle of attacklow profilelow shifting resistanceeasily adjustable chain stabiliser: maximum stability or less shifting effortimproved derailleur pulley designcage plates painted/anodised4 pivot bushings, fluorine-coatedderailleur pulley bearings sealedTechnology:Dyna-Sys11
Dyna-Sys11 is the name of the 11-speed shifting system for MTBs from Shimano. The focus lies on maintaining the pedalling rhythm both on flat ground and on uphill segments. The gear ratios are selected so that you make efficient progress in the most frequently used gear range and do not have to shift gears as much (” Rhythm Step” ).

Shadow RD+
Shadow Plus rear derailleurs are just as low-profile as Shimano’s Shadow rear derailleurs. In addition, a stabilizer with on/off switch is used to reduce chain slap and thus counteract chain drop. At the same time, this results in a quieter drive. Weight is also saved compared to other chain restraint devices.
Models:short:
Cage Length:GSMax. Largest Sprocket Teeth:42 with 2×11-speed, 46 with 1×11-speedMin. Largest Sprocket Teeth:40-toothMax. Smallest Sprocket Teeth:11-toothMin. Smallest Sprocket Teeth:11-toothMax. Chainring Difference:10-toothTotal Capacity:37-toothManufacturer Number:I-RDM9000GS
long:
Cage Length:SGSMax. Largest Sprocket Teeth:40 with 3×11-speed, 42 with 2×11-speed, 46 with 1×11-speedMin. Largest Sprocket Teeth:40-toothMax. Smallest Sprocket Teeth:11-toothMin. Smallest Sprocket Teeth:11-toothMax. Chainring Difference:18-toothTotal Capacity:45-toothManufacturer Number:I-RDM9000SGSContents:1 x Shimano XTR RD-M9000 Shadow+ rear derailleur