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General| Category | Bicycle |
|---|---|
| Series | GRX |
| Model | RD-RX812 |
| Maximum Sprocket | 42T |
| Minimum Sprocket | 11T |
| Total Capacity | 31T |
| Clutch | Yes |
| Min Low Sprocket | 11T |
| Rear Speeds | 11 |
| Cage Length | Long |
| Compatible Chain | HG 11-speed |
| Mount Type | Direct attachment |
| Compatibility | Shimano 11-speed |
| Actuation Ratio | Shimano Road |
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