• GRX ST-RX400 10 speed shifters and flat mount BR-RX400 hydraulic calipers
  
• Anti-slip brake lever increases control on bumpy terrain
  
• Raised brake lever pivot point increases leverage from the hoods
  
• Adjustable lever reach
  
• Compatible with GRX RD-RX400 and Tiagra 4700 derailleurs
  
• Forged aluminum BR-RX400 calipers
  
• Pre-assembled with SM-BH90-JK-SSR high power hose
  
• Includes L03A resin pads with improved wear resistance

Attributes

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