- Model Number : RD-R8000
- Series : ULTEGRA
- Maximum Sprocket : 30T
- Minimum Sprocket : 11T
- Maximum Front Difference : 16T
- Average Weight : 200 g (SS type), 210 g (GS type)
There are two specific rear derailleurs: one for cassettes 11-25 and 11-30 (SS short cage) and one for cassettes 11-28 and 11-34 (GS Medium cage), securing a smooth ride in even the highest and steepest mountain areas. Due to the integrated Shadow RD Technology with its race-proven, low profile design, the derailleur is more compact and fits closer to the frame, ensuring less damage in a crash.