Now simplified with a single derailleur cage length, the new 12-speed Shimano ULTEGRA R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option.
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 sprockets.
- Our fastest ever rear shifting, 58% faster than RD-R9150
- Compact design includes an integrated wireless unit, charger, and switch
- LED status indicator
- Battery indicator
- Pairing
- Adjust mode, etc.
- Wider range capacity
- Max. low sprocket: 34T
| MODEL NO |
RD-R8150 |
| SERIES |
ULTEGRA R8100 Series |
| Color |
Series color |
| Average weight |
262 |
| Remarks |
w/o Bracket spec. available |
| Rear speeds |
12 |
| Top-normal spring type|SHIMANO SHADOW RD |
✔ |
| Mount|Direct attachment (conventional) |
✔ |
| Mount|Direct mount |
✔ |
| Max. front difference |
16T |
| Total capacity |
39T |
| Low sprocket|Max. |
34T |
| Low sprocket|Min. |
30T |
| Top sprocket|Max. |
11T |
| Top sprocket|Min. |
11T |
| Fluoric coated link bushings |
4 |
| Pulley|Guide pulley bearing |
✔ |
| Pulley|Tension pulley bearing |
✔ |
| Pulley|Teeth |
11 |
| Pulley|Sunken type pulley screw |
✔ |
| B-axle|Hollow axle |
✔ |
| B-axle 2|Hollow axle |
✔ |
| Di2 connectivity wired|Di2 shifting |
✔ |
| Di2 connectivity wireless|Di2 shifting |
✔ |
| Di2 connectivity wireless|Bluetooth® LE custom (*1)|Adjust mode information |
✔ |
| Di2 connectivity wireless|Bluetooth® LE custom (*1)|Di2 battery level |
✔ |
| Di2 connectivity wireless|Bluetooth® LE custom (*1)|Gear position |
✔ |
| Di2 connectivity wireless|Bluetooth® LE custom (*1)|SHIMANO STEPS data items (*3) |
✔ |
| Di2 connectivity wireless|Bluetooth® LE custom (*1)|Compatible with E-TUBE RIDE |
✔ |
| Di2 connectivity wireless|Bluetooth® LE custom (*1)|Compatible with E-TUBE PROJECT |
✔ |
| Di2 connectivity wireless|ANT private (*2)|Adjust mode information |
✔ |
| Di2 connectivity wireless|ANT private (*2)|Di2 battery level |
✔ |
| Di2 connectivity wireless|ANT private (*2)|Gear position |
✔ |
| Di2 connectivity wireless|ANT private (*2)|SHIMANO STEPS 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 port (pcs) |
1 |
| Charging cable |
EW-EC300 |
