Shift/Brake Lever Shimano GRX ST-RX610 Right, 12-speed

Shift/Brake Lever Shimano GRX ST-RX610 Right, 12-speed

The Shimano GRX ST-RX610 is a right-hand 12-speed STI Dual Control lever designed for gravel and cyclocross riding, combining precise rear shifting with powerful hydraulic braking in one integrated unit. For gravel riders, braking reliability and sufficient power reserves are essential – the ST-RX610 delivers excellent braking power and controlled modulation, ensuring confidence on steep, technical or unexpected descents.

The gravel-inspired lever shape and bracket ergonomics provide a secure and natural grip during long rides on mixed terrain. A textured, anti-slip brake lever surface increases safety in wet and dusty conditions. Shifting is light, fast and accurate – comparable to Shimano’s top-tier road systems – delivering smooth and reliable 12-speed performance in all riding situations.

• Application: Gravel, Cyclocross
• Group: Shimano GRX
• Model: ST-RX610-R
• Type: Dual-Control (STI)
• Mount: Right
• Rear speeds: 12-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