Shimano GRX BL-RS717 Brake Lever & BR-RX410 Caliper, Left Rear

Shimano GRX BL-RS717 Brake Lever & BR-RX410 Caliper, Left Rear

• Dedicated GRX Hydraulic Disc Brake Lever - Provides smooth modulation and powerful braking with minimal hand effort in all riding conditions.

• Raised Hood Head Design - Helps prevent hand misalignment and improves stability on rough terrain.

• Recessed Finger Notch - Reduces the chance of fingers slipping upward during hard braking.

• Easy Setup and Maintenance - Shimano's clean, one-way bleeding system simplifies servicing and adjustment.

• Optimised for 1x12 Wireless GRX Drivetrains - Ideal companion to the ST-RX715-R Di2 right-hand lever.

Gravel riding is about freedom, exploration, and confidence beyond the tarmac. Whether you're heading deep into the backroads, lining up for a gravel event, or enjoying an all-day adventure, Shimano GRX components are built to deliver dependable performance without compromise. The Shimano GRX BL-RS717 left-side hydraulic brake lever and BR-RX410 rear caliper are designed specifically to complement the GRX 1x12-speed wireless drivetrain, offering powerful, consistent braking with a clean and simplified cockpit.

Developed as part of Shimano's accessible GRX 717 platform, this left-only brake lever focuses purely on braking performance, making it the ideal pairing for wireless Di2 1x setups. By combining proven hydraulic disc brake technology with gravel-specific ergonomics, Shimano delivers confident stopping power, excellent modulation, and reliable control across loose gravel, wet conditions, and long descents.

Technical Specifications:

• Orientation: Left-hand brake lever with rear brake caliper

• Brake type: Hydraulic disc brake

• Brake fluid: Shimano mineral oil

• Model numbers: BL-RS717 (brake lever) / BR-RX410 (caliper)

• Caliper mounting: Flat mount

• Recommended disc rotor: RT-CL700

• Colour: Black

• Kit Includes: BL-RS717 left-hand hydraulic brake lever and BR-RX410 rear brake caliper with hose and pads. Does not include rotor or adapter.