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Load image into Gallery viewer, Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake & Brake/Shift Lever Left 2x10
Load image into Gallery viewer, Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake & Brake/Shift Lever Left 2x10

SKU: LD0642

Shimano GRX ST-RX400 Hydraulic Disc Brake & 2x10 Shift/Brake Lever - Gravel Cyclocross Bike Components with ICE Technology, Ergonomic Dual Control Levers, Anti-Slip Design, Tool-Free Reach Adjustment, Compatible with Flat Mount Calipers for Gravel Bikes

Regular price $274.36
$300.00 Sale price $274.36 Regular price
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This is a pre order item. We will ship it when it comes in stock.

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Description
Specifications

Upgrade your gravel cycling setup with the Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake & Brake/Shift Lever (Left 2x10). Engineered specifically for gravel riders and adventure enthusiasts, this premium components package combines durability, precision, and ergonomic comfort to enhance your ride performance on any terrain.

Materials & Construction:

Crafted from lightweight yet robust materials, the Shimano GRX ST-RX400 lever and disc calipers feature high-quality alloy construction with a sleek black finish. The hydraulic calipers utilize Shimano's advanced ICE Technology, ensuring superior heat dissipation and consistent braking performance even during long descents or demanding rides. The mineral oil hydraulic fluid provides clean, reliable operation with minimal maintenance.

Performance & Engineering:

Designed for 2x10 drivetrain systems, the GRX RX400/BR-RX400 offers smooth, precise shifting and powerful braking response. The pre-bled hydraulic system simplifies installation and setup, reducing downtime and ensuring optimal performance right out of the box. The tool-accessible bleed port and one-way bleeding system make maintenance straightforward, even for less experienced users. The anti-slip brake lever enhances grip and control, providing confident braking in all weather conditions.

Components & Technology:

The gravel-inspired dual control lever features ergonomic brackets designed to reduce hand fatigue during long rides. The adjustable reach feature accommodates multiple hand sizes and preferences for a personalized fit. Compatible exclusively with Shimano FD-4700, FD-RX400 front derailleurs, RD-RX400, and RD-4700 rear derailleurs, this system integrates seamlessly with your existing Shimano road drivetrain components.

Style & Use Case:

Perfect for gravel grinding, cyclocross, and adventure touring, the sleek black finish complements any bike aesthetic. Flat mount calipers enable clean, modern installation on a variety of frame geometries, making these components ideal for both new builds and upgrades. The resin pad compound offers quiet operation and effective stopping power on mixed terrains, from paved roads to rough gravel paths.

Innovative & Differentiating Features:

- Shimano ICE Technology for enhanced heat management during prolonged descents

- Easy-to-access tool adjust and bleed ports for hassle-free maintenance

- Pre-bled hydraulic system for quick, clean installation

- Adjustable reach to tailor lever feel and comfort

- Compatibility with top-tier Shimano drivetrain components for premium performance

Item Specifications:

- Hydraulic Hose Length: 1000mm

- Brake Caliper Mount: Flat Mount

- Hydraulic Fluid: Mineral Oil

- Color: Black

- Rotor Included: No

- Friction and brake power optimized for gravel & adventure riding

Optimize your gravel bike's braking and shifting performance with the Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake & Brake/Shift Lever. Engineered for durability, precision, and comfort, this system ensures you're ready for any terrain or adventure. Equip your bike with Shimano's trusted technology and experience confident, reliable braking and smooth gear changes on every ride.

  • High-performance Shimano GRX ST-RX400/BR-RX400 hydraulic disc brake and shift lever, designed specifically for gravel bike riding with durable aluminum construction and precise handling.
  • Equipped with Shimano ICE Technology for superior heat dissipation, ensuring reliable braking performance even on long, steep descents.
  • Features easy-to-use One Way Bleed system and pre-bled brake calipers for quick, hassle-free setup and maintenance, saving you time and effort on the trail or commute.
  • Gravel-inspired ergonomic dual control shift/brake levers with anti-slip design provide comfortable, secure grip for all-day riding and precise gear shifts with the same light operation as higher-tier systems.
  • Adjustable reach with toolless design allows for a perfect fit for various hand sizes and riding styles, making this hydraulic brake/shifter combo versatile for diverse gravel and adventure cycling applications.
Rotor IncludedNo
ColorBlack
Brake Caliper MountFlat Mount
Hydraulic Fluid TypeMineral Oil
Brake Lever UseLeft
Pad CompoundResin
Rear Der/Shifter CompatibilityShimano Road
Hydraulic Hose Length1000
Adjustable ReachYes
Adjustable Contact PointNo
Drivetrain Speeds10
Defined ColorBlack
Front Der/Shifter CompatibilityShimano Road
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365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

Living an active lifestyle is just that, a lifestyle that never goes away and our goal is to always exceed your expectations so we can take this lifelong journey together. We strive to have the parts you need, at competitive prices with unmatched shipping speeds!

If there is ever an issue with an order we will work at warp speed to fix our mistake and make sure you never go a day without a bicycle! If you are not receiving the quality of service you need from one of our exceptionally qualified bicycle experts, tell them Ben Berman told you to tell them "Customer Loyalty" and then name your terms.

Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


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These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

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