Shift/Brake Lever Shimano GRX ST-RX810 Left, 2-speed

Shift/Brake Lever Shimano GRX ST-RX810 Left, 2-speed

The Shimano GRX ST-RX810 is a left-hand 2-speed STI Dual Control lever designed for gravel, road and cyclocross riding, combining precise front shifting with powerful hydraulic braking in one ergonomic unit. For gravel riders, braking reliability and sufficient power reserves are essential – the ST-RX810 delivers excellent braking power and precise modulation, ensuring control on steep, technical and unexpected descents.

The gravel-inspired lever shape and bracket ergonomics provide a natural and secure grip on rough terrain and during long rides. A textured, anti-slip brake lever surface increases safety in wet and dusty conditions. Shifting performance is light, fast and smooth – comparable to Shimano’s top-tier systems – offering reliable 2x11 drivetrain performance in every situation.

• Application: Gravel, Road, Cyclocross
• Group: Shimano GRX
• Model: ST-RX810
• Type: Dual-Control (STI)
• 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 / BR-RX400
• Recommended rotor: SM-RT800 / SM-RT70 / SM-RT64