The Shimano XT rear derailleur RD-M786 ensures precise, low-noise shifting in 2x10-speed and 3x10-speed drivetrains (Dyna-Sys). It features Shadow RD+ technology, where a stabiliser prevents the chain from sagging, slapping or dropping. Both the outer and inner cages of the rear derailleur are made of lightweight aluminium. Specifications: Series: Deore XT M780 Application: Cross Country, All Mountain Gearing: 10-speed Mount: standard (Direct Mount compatible) Capacity: 35 tooth (short), 43 tooth (long) Compatibility: Shimano MTB / City & Touring 10-speed Compatibility - Chains: HG-X 10-speed Technical Information: Derailleur Pulleys: 11-tooth Outer Cage Material: Aluminium Inner Cage Material: Aluminium Other Materials: stainless steel, aluminium, steel Features: quieter drivetrain rear derailleur stabiliser lightweight and simple solution to prevent the chain dropping less chain sag 4 pivot bushings, fluorine-coated painted cage plates derailleur pulley bearings sealed Technology: Dyna-SysDyna-Sys is the name of the 10-speed shifting system for MTBs from Shimano. It works with closer gear ratios that enable smooth and efficient shifting. Optimised gear combinations maximise propulsion and extend the life of the cassette, chain and chainring.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: GS Max. Largest Sprocket Teeth: 36-tooth Min. Largest Sprocket Teeth: 32-tooth Max. Smallest Sprocket Teeth: 11-tooth Min. Smallest Sprocket Teeth: 11-tooth Max. Chainring Difference: 18-tooth Total Capacity: 35-tooth Manufacturer Numbers: I-RDM786GSL (black), I-RDM786GSS (silver) long: Cage Length: SGS Max. Largest Sprocket Teeth: 36-tooth Min. Largest Sprocket Teeth: 32-tooth Max. Smallest Sprocket Teeth: 11-tooth Min. Smallest Sprocket Teeth: 11-tooth Max. Chainring Difference: 22-tooth Total Capacity: 43-tooth Manufacturer Numbers: I-RDM786SGSL (black), I-RDM786SGSS (silver) Contents: 1 x Shimano XT RD-M786 Shadow+ rear derailleur Weight: black/short: 262 g black/long: 266 g