Shift/Brake Set Shimano GRX ST-RX600/BR-RX400 Right, 11-speed

Shift/Brake Set Shimano GRX ST-RX600/BR-RX400 Right, 11-speed

The Shimano GRX ST-RX600 + BR-RX400 is a right-hand 11-speed Dual Control shift and hydraulic disc brake set designed for gravel, road and cyclocross riding. GRX-specific ergonomics are optimized for mixed terrain, delivering secure grip, stable handling and precise rear shifting even on rough roads.

The BR-RX400 Flat-Mount caliper provides strong and consistent braking performance on steep descents and demanding terrain. Efficient heat dissipation helps prevent overheating and ensures stable braking power. The one-way bleeding system and straightforward maintenance make this brake setup reliable and user-friendly even under intensive use.

• Application: Gravel, Road, Cyclocross
• Series: GRX
• Model: ST-RX600 / BR-RX400
• Type: Dual-Control (STI)
• Mount: Right
• Rear speeds: 11-speed
• Reach adjustment: Yes, with tool
• Handlebar diameter: 23.8–24.2 mm
• Brake type: Hydraulic disc brake
• Brake caliper: BR-RX400-R
• Mount type: Flat-Mount
• Brake pads: L03A Resin with Fin
• Brake hose: SM-BH90-JK-SSR rear 1700 mm (cuttable)
• One-way bleeding: Yes
• Brake fluid: Shimano mineral oil
• Recommended rotor: SM-RT64, SM-RT70, SM-RT800