GRX ST-RX815 Di2 Shifter/Hydraulic Brake LeverA raised hood head prevents hand misalignment and slippage while a recessed finger notch prevents upward slipping Anti-slip texture and brake lever coating Higher brake lever axis and curved lever allow for higher braking efficiency to reduce fatigue on long rides Tooled reach adjust allows for lever to be adjusted to fit multiple hand sizes and riding preferences
| Rotor Included | No |
| Color | Black |
| Brake Caliper Mount | Flat Mount |
| Hydraulic Fluid Type | Mineral Oil |
| Brake Lever Use | Left, Right |
| Pad Compound | Resin |
| Rear Der/Shifter Compatibility | Shimano Road Di2 |
| Hydraulic Hose Length | 1000, 1700 |
| Adjustable Reach | Yes |
| Adjustable Contact Point | No |
| Drivetrain Speeds | 11 |
| Weight | 384, 414 |
| Defined Color | Black |
| Front Der/Shifter Compatibility | Shimano Road Di2 |
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