Shimano Ultegra Di2 RD-RX805-GS Rear Derailleur - 11 Speed Medium Cage Black With Clutch. The Ultegra RX Rear Derailleur brings Shimanos chain stabilizing technology road cycling drivetrains delivering smooth and precise shifting over technical terrain. It expands road bike capabilities inspiring confidence on any surface and drives the evolution of road cycling to include greater elements of adventure. The Ultegra RX Rear Derailleur is available in 11-speed Mechanical or Di2 compatible options.
Shimano Shadow RD+ chain stabilizer mechanism
Includes clutch with On/Off switch
Compatible with current road Dual Control Levers
Direct Mount Compatible
| Largest Cog | 34 |
| Color | Black |
| Rear Der/Shifter Compatibility | Shimano Road Di2 |
| Rear Derailleur Mount Type | 10x1 Standard |
| Rear Derailleur Mount Type | Shimano Rear Direct Mount |
| Drivetrain Speeds | 11 |
| Weight | 280 |
| Chain Wrap Capacity (teeth) | 39 |
| Cage Length | Medium |
