Shift/Brake Lever Shimano GRX ST-RX610 Left, 2-speed

Shift/Brake Lever Shimano GRX ST-RX610 Left, 2-speed

The Shimano GRX ST-RX610 is a left-hand 2-speed STI Dual Control lever developed specifically for gravel and cyclocross riding, combining precise shifting and powerful hydraulic braking in one ergonomic unit. One of the key demands of gravel riders is a reliable braking system with ample power reserve – the ST-RX610 delivers excellent braking performance and modulation to maintain control on steep, technical or unexpected descents.

The gravel-inspired lever shape and bracket ergonomics ensure a secure grip on rough terrain. A textured, anti-slip brake lever surface enhances safety in wet and dusty conditions. Shifting performance matches that of Shimano’s high-end road systems, providing light, smooth and responsive front shifting in every situation.

• Application: Gravel, Cyclocross
• Group: Shimano GRX
• Model: ST-RX610-L
• 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-SS
• Recommended caliper: BR-RX820 / BR-RX400
• Recommended rotor: SM-RT800 / SM-RT70 / SM-RT64