SHIMANO
Shift/Brake Lever Shimano GRX ST-RX815 Di2 Left, 2-speed
Shift/Brake Lever Shimano GRX ST-RX815 Di2 Left, 2-speed
The Shimano GRX Di2 ST-RX815 is a left-hand 2-speed electronic Di2 STI Dual Control lever designed for gravel, road and cyclocross riding. Shimano’s Di2 technology delivers ultra-precise and instant front shifting, while the hydraulic disc brake system ensures powerful and well-modulated braking performance in demanding conditions.
The ergonomics are specifically tailored for mixed terrain: a raised hood head reduces the risk of hand misalignment, while a ribbed finger groove prevents upward slipping. The anti-slip texture and brake lever coating provide a secure grip in wet and rough conditions. A higher brake lever pivot and curved lever design enhance braking input efficiency and reduce fatigue on long rides. The result is greater control, improved grip and enhanced confidence on uneven surfaces and descents.
- Application: Gravel, road, cyclocross
- Group: Shimano GRX Di2
- Model: ST-RX815
- Type: Dual-Control (STI), Di2
- Mount: Left
- Front speeds: 2-speed
- Optical gear display: No
- Reach adjustment: Yes, with tool
- Handlebar diameter: 23.8 mm / 24.2 mm
- Cable port: Straight
- Brake type: Hydraulic disc brake
- Recommended hose: SM-BH90-JK-SSR
- Recommended caliper: BR-RX810
- Recommended rotor: SM-RT800
- Firmware update via E-Tube Project: Yes
- Remote switch compatible: Yes
- E-Tube ports: 2
- E-Tube plugs: 0
- Remote sprinter switch ports: 0
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Estonia
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Finland
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Latvia
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Lithuania
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Shimano is a Japanese component manufacturer that since 1921 has been one of the world’s largest suppliers of bicycle drivetrains, brakes and cycling-specific parts. Shimano groupsets — from Tourney for city bikes to top-tier Dura-Ace — are found on virtually every serious bike brand. The company also makes fishing tackle and rowing components.