The GRX 610 Dual Control Lever and GRX BR-RX400 hydraulic brakes. The GRX 610 delivers light and responsive shifting. The ergonomic shifter design improves comfort and the textured, anti-slip brake lever increases control. With a low-profile flat mount design, the GRX BR-RX400 hydraulic disc brakes provide greater control. All in the total package gives confidence and performance for mixed terrain riding.

• GRX ST-RX610, 12 speed shifters and flat mount BR-RX400 hydraulic calipers
  
• GRX BL-RX610-L option for brake only left 1x setup
  
• Mechanical shift
  
• Hydraulic disc brake
  
• Mineral oil
  
• Consistent braking performance in all weather conditions
  
• Reach adjustment range (10.9 mm)
  
• Clamp band diameter – 23.8-24.2 mm
  
• Includes L03A resin pads with improved wear resistance
  
• Brake hose kit (included): SM-BH90-JK-SSR
  
• Recommended disc brake rotor (not included): SM-RT64

Attributes

Fluid	Mineral oil
Brake Material	Aluminum
Caliper mount	Flat mount
Lever Blade Material	Aluminum
Disc Diameter	140 or 160mm (not included)