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Discover the almost endless possibilities of modern road cycling with SHIMANO GRX components. The RX400 Series is Shimano’s entry into their range of gravel- and cross-dedicated GRX groupsets.
The GRX ST-RX400 STI shift/brake levers with gravel-specific ergonomics are your control unit for maximum shifting performance and outstanding control on rough terrain. Featuring an 18mm higher axis point than “traditional” SHIMANO road shifters, a curved brake lever profile and an anti-slip textured finish, the levers offer best grip on rough gravel roads and challenging cyclocross rides. Yet, the GRX levers also impress with high comfort and reliability on bikepacking adventures with lots of luggage and on daily commutes to work.
In combination with a powerful hydraulic BR-RX400 Flatmount disc brake, SHIMANO offers you a braking system with great braking performance and comfortable braking power modulation. This provides high safety when riding your gravel bike in bad weather. Fast and precise shifting and a wide lever reach adjustment range top off the package.
• Custom ergonomics (gravel-inspired ergonomics)
• Improved shifting performance and constantly high braking power, even in bad weather
• ONE WAY BLEEDING for quick and easy bleeding
• Intended use: Gravel, Road, Cyclocross
• Compatibility: 10-speed/double
• Material: aluminium, composite
• Brake levers: ST-RX400 (front wheel: left lever / rear wheel: right lever)
• Brake caliper: BR-RX400 (Flatmount, 2-piston system (resin), flat design)
• Brake hose: SM-BH90
• Brake fluid: SHIMANO mineral oil
• Lever reach adjustment integrated (with tool)
• Hose length: 1000 mm (front wheel); 1700 mm (rear wheel)
• Brake pads: L03A Ice Tec (with cooling fins), organic
• Weight: approx. 613 g (pair)
• Weight brake caliper: approx. 143g (piece)
In the box:
• 1x SHIMANO GRX ST-RX400 STI shift/brake lever (double, front wheel, left)
• 1x SHIMANO GRX ST-RX400 STI shift/brake lever (10-speed, rear wheel, right)
• 1x SHIMANO GRX BR-RX400 Flatmount front brake caliper (incl. 1 set of brake pads and adapter for 160mm disc rotor)
• 1x SHIMANO GRX BR-RX400 Flatmount rear brake caliper (incl. 1 set of brake pads and 25mm bolt)
• 2x SHIMANO SM-BH90 brake hoses (1000 mm & 1700 mm)
• 2x SHIMANO Optislick gear cables
Filled and bled ready for installation.
For the recommended SHIMANO SM-RT64 SLX/LX Centerlock disc rotors see product code: 982108.
For the single brake/shift levers for left or right side mounting incl. brake calipers see product code: 2286133.
Note: Only compatible with Shimano GRX or Tiagra 4700 10-speed rear derailleurs!