Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world.

GRX hydraulic disc brake STI’s give you control, modulation and power with minimal effort in all riding conditions.

• Flat Mount Brake Caliper fitting
• Disc brake lever with dropper seatpost operation
• Raised hood head prevents hand misalignment and slippage
• Anti-slip texture and brake lever coating gives higher braking efficiency and reduces fatigue on long rides
• Kit contains bled left hand ST-RX810-LA STI, BR-RX810 flat mount rear brake calliper with pads, hose and mineral oil (without rotor or adapter)