SHIMANO GRX - Rear Derailleur - SHIMANO SHADOW RD+ 12-speed
RD-RX820
NEW
Enhanced chain security and quieter, more stable shifting for gravel riding
The RD-RX820 is compatible with 11-34T and 11-36T 12-speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. The SHIMANO GRX 12-speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. And the chain tensioner has an ON/OFF switch for outings on smooth surfaces.
FEATURES
- Silent and secure rear shifting on rough terrain
- Adjustable chain stabilizer prevents chain slap and drops
- SHIMANO SHADOW RD+
- Smooth and reliable shifting on mixed surfaces
- ON/OFF stabilizer switch matches terrain
- Maximum front chainring difference: 17T
- Top sprocket: Max. 11T/Min. 11T
- Low sprocket: Max. 36T/Min. 34T
- Total capacity: 42T
PRODUCT SPECIFICATIONS
| MODEL NO | RD-RX820 |
|---|---|
| SERIES | GRX 12-speed |
| Color | Series color |
| Average weight | 270 |
| Rear speeds | 12 |
|---|---|
| Compatible chain | HG 12-speed |
| Top-normal spring type|SHIMANO SHADOW RD+ | ✔ |
| Mount|Direct attachment (conventional) | ✔ |
| Mount|Direct mount | ✔ |
| Cable adjuster | ✔ |
| Max. front difference | 17T |
| Total capacity | 42T |
| 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 | ✔ |
| Pulley|Tension pulley bearing | ✔ |
| Pulley|Teeth | 11/13T |
| Pulley|Sunken type pulley screw | ✔ |
| B-axle|Hollow axle | ✔ |
REPLACEMENT PARTS
