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.
| 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. | 14T |
| Top sprocket|Min. | 11T |
| Fluoric coated link bushings | 4 |
| Pulley|G pulley bearing | ✔ |
| Pulley|T pulley bearing | ✔ |
| Pulley|Teeth | 11 |
| Pulley|Sunken type pulley bolt | ✔ |
| 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 |
