The Shimano GRX ST-R610 12-Speed STI Lever with BR-RX410 Flat Mount Caliper delivers outstanding braking power, smooth shifting and confidence-boosting ergonomics designed specifically for gravel riding, bikepacking and cyclocross. Engineered as part of the latest Shimano GRX 12-speed groupset, this right-hand/front hydraulic brake and mechanical shift lever combo offers superior control, rugged durability and all-terrain performance.
Built for stability, comfort and precise handling on rough surfaces, this GRX STI unit features refined ergonomics, an improved lever shape and advanced anti-slip textures for secure grip across demanding terrain.
GRAVEL-SPECIFIC ERGONOMICS: Designed exclusively for gravel and adventure riding, GRX provides enhanced control, vibration damping and all-day comfort when tackling mixed surfaces.
POWERFUL HYDRAULIC DISC BRAKING: The GRX 12-speed hydraulic system delivers consistent stopping power, modulation and control with minimal hand effort, ideal for steep descents, loose terrain and long-distance rides.
ENHANCED LEVER DESIGN FOR ROUGH TERRAIN
- Higher brake lever axis improves stability and control on uneven trails.
- Curved brake lever boosts comfort and grip during aggressive riding.
- Raised hood prevents hand slippage on bumpy gravel sections.
- Recessed finger notch stops upward slipping for secure braking.
ANTI-SLIP TEXTURED SURFACES: Special lever coatings and textured hoods deliver a firm, confident hold in wet, dusty and muddy conditions, reducing fatigue on long rides.
READY-TO-INSTALL BLEED KIT:Comes pre-bled with hose and Shimano mineral oil for easy, clean installation.
INCLUDES BR-RX410 FLAT MOUNT CALLIPER:Lightweight, reliable and designed for consistent braking performance on gravel and cyclocross bikes. Includes brake pads.
What’s Included:
- Right/front ST-R610 mechanical 12-speed STI shifter (pre-bled)
- BR-RX410 flat mount hydraulic disc brake caliper
- Hose & mineral oil
- Brake pads
- (Rotor and adapter not included)
Open up a new world of riding with gravel focused components designed to take you further on loose terrain.