Shimano Ultegra Di2 Rear Derailleur 2x12s
Shimano Ultegra Di2 Rear Derailleur 2x12s
With our fastest, most accurate shifting, the new 12-speed ULTEGRA R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28-34T low
BENEFIT
- Our fastest ever rear shifting, 58% faster than RD-R9150
- LED status indicator
- Wider range capacity
FEATURE
- Battery indicator
- Pairing
- Adjust mode, etc.
- Max. low sprocket: 34T
TECHNOLOGY
SHIMANO SHADOW RD
The mechanism rear derailleur, SHIMANO SHADOW RD, is intended for more aggressive riding. Its super low profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.
Direct Mount Rear Derailleur
Rear wheels are easier to remove with a mounting option for SHIMANO SHADOW RD and SHIMANO SHADOW RD+. The direct mount feature is designed to suit a wide range of contemporary frames with large-section chainstays, in particular mountain bikes with thru-axle dropouts. Allows for flexible frame design No special tooling requirement (M10x1 Mount bolt, without e-clip) Easier to install rear wheel.
SPECIFICATIONS
| Model No | RD-R8150 |
| Series | ULTEGRA |
| Rear speeds | 12 |
| RD construction | |
| SHIMANO SHADOW RD | ✔ |
| Mount | |
| Direct attachment (conventional) | ✔ |
| Direct mount | ✔ |
| Max. front difference | 16T |
| Total capacity | 39T |
| Low sprocket | |
| Max. | 34T |
| Min. | 30T |
| Top sprocket | |
| Max. | 11T |
| Min. | 11T |
| Fluoric coated link bushings | 4 |
| Pulley | |
| Guide pulley bearing | ✔ |
| Tension pulley bearing | ✔ |
| Teeth | 11 |
| Sunken type pulley screw | ✔ |
| B-axle | |
| Hollow axle | ✔ |
| B-axle 2 | |
| Hollow axle | ✔ |
| Di2 connectivity wired | |
| Di2 shifting | ✔ |
| Di2 connectivity wireless | |
| Di2 shifting | ✔ |
| Bluetooth® LE custom (*1)|Adjust mode information | ✔ |
| Bluetooth® LE custom (*1)|Di2 battery level | ✔ |
| Bluetooth® LE custom (*1)|Gear position | ✔ |
| Bluetooth® LE custom (*1)|SHIMANO E-BIKE SYSTEMS data items (*3) | ✔ |
| Bluetooth® LE custom (*1)|Compatible with E-TUBE RIDE | ✔ |
| Bluetooth® LE custom (*1)|Compatible with E-TUBE PROJECT | ✔ |
| ANT private (*2)|Adjust mode information | ✔ |
| ANT private (*2)|Di2 battery level | ✔ |
| ANT private (*2)|Gear position | ✔ |
| ANT private (*2)|SHIMANO E-BIKE SYSTEMS data items (*3) | ✔ |
| Firmware update by E-TUBE PROJECT | ✔ |
| SD50 port (pcs) | 0 |
| SD300 port (pcs) | 1 |
| SD50 connector (pcs) | 0 |
| SD300 connector (pcs) | 0 |
| LED for system status | ✔ |
| Charging cable | EW-EC300 |
| Average weight | 262 |
| Remarks | w/o Bracket spec. available |
| Color | Series color |