In combination with SHIMANO’s road and gravel disc brakes, the GRX sub brake lever BL-RX812 brings greater rider control and safety for mixed terrain riding.
The sub brake lever for the hydraulic disc brake is integrated into the existing brake hose that connects brake/shift levers and brake callipers. This ensures reliable and accessible braking in more positions. Especially when riding upright on the tops of the handlebar, the GRX BL-RX812 sub brake levers allow for direct access and faster braking when you need it.
Details:
• Intended use: Gravel / Adventure / Bikepacking / Road / Cyclocross
• More confident and accessible braking from multiple positions
• Faster braking on the tops of the handlebar
• Less fatigue on long tours thanks to more positions
Technical details:
• Belongs to groupset: GRX
• Material: aluminium (lever and holder)
• Lever size: 1-finger
• SERVO-WAVE: no
• Adjustable free stroke: no
• Lever reach adjustment: yes (with tools)
• Recommended brake hose: SM-BH90-JK-SSR
• Weight: approx. 160 g
In the box:
• 1 set of SHIMANO GRX additional brake levers BL-RX812, left and right incl. connection accessories





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