Shimano
Shimano GRX DI2 RD-RX825 12-Speed Rear Derailleur
Regular price
₱15,335.00
Regular price
₱0.00
Sale price
₱15,335.00
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SHIMANO's GRX Di2 12-speed rear derailleur features a built-in wireless connectivity unit and charging port, ensuring fast and reliable shifting for mixed-terrain riding and easy recharging. Integrated SHADOW RD+ technology prevents chain slap and ensures precise shifting even on rough terrain. Thanks to built-in ON/OFF switch, wheel removal is easy too. The RD-RX825 is compatible with 11-34T and 11-36T 12-speed cassettes and supports Full or Semi-Synchronized shift modes, enhancing rider customization.
FEATURES
- Compact design with integrated wireless unit, charging port, and switch
- Fast and reliable shifting on rough terrain
- Adjustable chain stabilizer prevents chain slap
- SHIMANO SHADOW RD+
- Gravel-tuned clutch tension
- Switch stabilizer ON/OFF to match terrain: ON for gravel, OFF for smooth roads
- LED status indicator
- Battery indicator, pairing, adjust mode, etc.
- Top sprocket: Max. 11T/Min. 11T
- Low sprocket: Max. 36T/Min. 34T
- Total capacity: 40T
PRODUCT SPECIFICATIONS
| MODEL NO | RD-RX825 |
|---|---|
| SERIES | SHIMANO GRX 2×12-speed Di2 |
| Color | Series Color |
| 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 | 17T |
| Total capacity | 40T |
| Low sprocket|Max. | 36T |
| Low sprocket|Min. | 34T |
| Top sprocket|Max. | 11T |
| Top sprocket|Min. | 11T |
| Fluoric coated link bushings | 4 |
| Pulley|Guide pulley bearing | Sealed bearing |
| Pulley|Tension pulley bearing | Sealed bearing |
| Pulley|Teeth | 11/13T |
| 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 cable | EW-EC300 |
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