Shimano XT RD-M8000-SGS Rear Derailleur - 11 Speed Long Cage Black Spd-Ped 6 Upper Cup 56mm Headset

6 Upper Cup 56mm Headset Position Complete SHIS Lower ZS56/40 Stack Height 11 Steerer Tube 1-1/8-1

}Full Speed Ahead Internal Headset Upper 44mm- for Ridley CX

Aerodynamic design

5mm Left Crankarm Black

Shimano XT RD-M8000-SGS Rear Derailleur - 11 Speed Long Cage Black Spd-Ped 6 Upper Cup 56mm HeadsetShimano XT RD M8000 SGS Rear Derailleur 11 Speed Long Cage Black. Shimano XT RD M8000 Rear Derailleurs TECH SPECS Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Rear Der Shifter Compatibility Shimano Mountain Cage Length Long Drivetrain Speeds 11 Weight 275 Color Black Chain Wrap Capacity (teeth) 47 Largest Cog 46