Shimano GRX ST-RX610 Brake/Shift Lever Kit (Black) (Flat Mount) (Left) (Brake Only) (BR-RX410 Caliper Included)

Shimano GRX ST-RX610 Hydraulic Brake/Shift Levers Description:

Shimano’s GRX groupsets have always been designed to bring smooth shifting, reliable braking, and comfort to gravel riding. The Shimano GRX ST-RX610 hydraulic brake/shift levers use trickle-down technology from the original GRX 800 series to bring all the GRX performance and qualities to a more budget-friendly tier. Designed for performance and comfort on rough surfaces, you’ll find textured hoods for a secure grip as well as an anti-slip coating on the brake levers for added confidence in wet or muddy conditions. Updated with 12-speeds and the BR-RX410 caliper with more pad/rotor clearance and an easier bleeding/maintenance process, you’ll get more options, more gears, and more opportunities to ride the way you want to.

Features:

• Trickled down technology from the GRX 800 series ensures very light, precise, and responsive mechanical shifting
• Textured hoods for a secure grip on bumpy terrain
• Anti-slip lever coating provides braking confidence in wet or muddy conditions
• Shifter has a cable pull ratio specifically for GRX 12 speed cable actuated/mechanical drivetrains and is not compatible with 12-speed mountain bike derailleurs
• GRX BR-RX410 disc caliper has 10% more pad clearance than previous GRX 400 series brakes and has excellent heat dissipation
• 2-speed (2x) left shifter and 12-speed right shifter include an inner shift cable and black OT-SP41 shift cable housing

Specifications:

• Shifter Style: Lever (Dropbar Gravel/Road)
• Speed: 1x | 2x | 12 Speed
• Derailleur Compatibility: Shimano GRX Gravel (12 Speed)
• Shift Mechanism: Cable Actuated
• Adjustable Reach: Yes
• Brake Type: Hydraulic
• Brake Fluid: Mineral Oil
• Brake Mount: Flat Mount
• Brake Pads: Organic/Resin
• Hose Length: 1000mm
• Color: Black
• Weight: –

This product was added to our catalog on December 24, 2025