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Shimano XT RD-M8000-SGS Rear Derailleur - 11 Speed Long Cage Black ModelNumber=K3675 4 Tire Type Tubeless ReadyShimano XT RD M8000 SGS Rear Derailleur 11 Speed Long Cage Black. Shimano XT RD M8000 Rear Derailleurs TECH SPECS Largest Cog 46 Color Black Rear Der Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Drivetrain Speeds 11 Weight 275 Chain Wrap Capacity (teeth) 47 Cage Length Long