Shimano GRX ST-RX400 Hydraulic Double Left Lever
for double chainring mechanical drivetrain and hydraulic brakes
€152.24
Price : €174.99 
Our opinion
A simple, lightweight and effective handle, perfectly suited to single chainring gravel bikes. Progressive braking and successful ergonomics for maximum enjoyment on the trails!
Aurélien L.
Cycling in all its forms
The Shimano GRX Di2 BL-RS717-F left-hand lever with hydraulic brake caliper is designed for single-chainring gravel set-ups, offering a lighter and more streamlined solution. Dedicated exclusively to front braking, it stands out for its optimised ergonomics and excellent control on all terrains.
Its hydraulic brake lever ensures progressive and consistent power, ideal for long gravel rides and challenging conditions. The intuitive reach adjustment allows you to adapt the lever position to your body shape for maximum comfort.
Combined with resin pads featuring a fin, this lever benefits from 10% extra clearance, effectively reducing braking noise. Maintenance is simplified thanks to an optimised bleeding process, in keeping with Shimano’s reliability standards.
Technical specifications
- Use: Gravel
- Compatibility: Single chainring only
- Drivetrain compatibility: Shimano GRX Di2 12-speed single chainring
- Position: Left / front
- Technology: Hydraulic disc brake, reach adjustment
- Function: Hydraulic front brake lever for single-chainring gravel set-up
- Hose length: 1000 mm
- Part number: IRS7174DLF6SC100
- Brand: Shimano
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