The Shimano GRX ST-RX820 left dual control lever delivers light and responsive mechanical shifting for mixed-terrain riding and racing (Note: LD0374 is a non-shift dropper post remote variation for 1x set ups). The ergonomic shifter design improves comfort by decreasing pressure on your palms while the textured anti-slip brake lever surface increases control on bumpy terrain. The SERVO WAVE brake lever action provides greater braking power with improved control.
| Brake Lever Actuation | Hydraulic |
| Double or Triple | Double |
| Rotor Included | No |
| Hydraulic Fluid Type | Mineral Oil |
| Brake Lever Use | Left |
| Includes Brake | No |
| Adjustable Reach | Yes |
| Drivetrain Speeds | 12 |
| Front Der/Shifter Compatibility | Shimano Road |
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