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Load image into Gallery viewer, Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake and Brake/Shift Lever - Right, 10-Speed, Flat Mount, Finned Resin
Load image into Gallery viewer, Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake and Brake/Shift Lever - Right, 10-Speed, Flat Mount, Finned Resin

SKU: LD0643

Shimano GRX RX400 Hydraulic Disc Brake and Shift Lever - 10-Speed Gravel Bike Component with Flat Mount, ICE Technology, Finned Resin Pads, Ergonomic Dual Control Levers, Adjustable Reach, and Minimal Maintenance for Gravel and Cyclocross Riding

Regular price $272.48
$300.00 Sale price $272.48 Regular price
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Description
Specifications

Boost your gravel adventures with the Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake and Brake/Shift Lever - Right, 10-Speed, Flat Mount, Finned Resin - a high-performance, reliable, and ergonomic solution engineered specifically for gravel and adventure cyclists.

Materials & Engineering Excellence

Constructed with durable, lightweight materials, the GRX RX400 components feature premium resin brake pads designed for consistent stopping power and reduced brake fade. The caliper utilizes Shimano's innovative ICE Technology, ensuring exceptional heat dissipation during long descents or intense riding conditions. The flat mount design offers clean, sleek integration with modern gravel frames, reducing weight and enhancing overall bike aesthetics.

Performance & Technology

Equipped with 10-speed compatible shifting, the GRX RX400 leverages Shimano's advanced hydraulic technology, delivering smooth, precise, and reliable gear changes. The hydraulic system uses mineral oil for cleaner maintenance and smoother operation. The finned resin brake pads and caliper design optimize heat management, ensuring consistent braking in all conditions, whether conquering technical descents or riding on wet surfaces.

Components & Features

- Ergonomic Dual Control Levers: Gravel-inspired design with bracket ergonomics provide comfort and control for all-day rides.

- Adjustable Reach: To accommodate a variety of hand sizes and riding styles, allowing for a custom fit.

- Pre-Bled and Easy Maintenance: The brake system is pre-bleed, featuring Shimano's One Way Bleed system for straightforward setup and maintenance, saving time and effort in the field or workshop.

- Anti-Slip Brake Levers: Enhance grip and confidence during aggressive braking.

- Compatibility: Designed exclusively for Shimano Road drivetrain systems, with compatibility limited to FD-4700 and FD-RX400 front derailleurs and RD-RX400 and RD-4700 rear derailleurs, ensuring seamless integration and reliable shifting performance.

Style & Use Case

Perfect for gravel riders, adventure cyclists, and bikepackers, this hydraulic disc brake and shifter combo delivers dependable stopping power and shift precision on diverse terrains. Its sleek black finish and functional design make it a stylish upgrade for modern gravel bikes, balancing performance with durability.

Innovative & Differentiating Features

- Shimano ICE Technology for superior heat management

- Tool-free reach adjustment for customized fit

- Pre-bled system for hassle-free installation and maintenance

- Flat mount caliper design for lightweight and clean setup

- Resin brake pads for quiet operation and residue reduction

Upgrade your gravel bike with the Shimano GRX ST-RX400/BR-RX400 Hydraulic Disc Brake and Brake/Shift Lever, and experience seamless control, enhanced braking performance, and bike readiness for any adventure. Perfect for gravel, adventure, and cyclocross cyclists seeking reliable, high-quality components built to perform in demanding conditions.

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Optimize your ride with Shimano GRX, the ultimate gravel shifting and braking solution designed for durability, precision, and style.

  • High-performance hydraulic disc brake and shift lever combo designed for gravel and adventure cycling, featuring Shimano ICE Technology for superior heat dissipation and consistent braking power.
  • Constructed with durable yet lightweight materials, the BR-RX400 caliper and lever provide reliable stopping performance under demanding terrain conditions while maintaining effortless, light-shift operation.
  • The right-side hydraulic brake/shift lever is ergonomically designed with gravel-inspired dual control, anti-slip lever surfaces, and tool-free reach adjustment for a personalized fit and optimal comfort on long rides.
  • Compatible exclusively with Shimano 10-speed road derailleurs, the system offers seamless shifting performance, easy setup with pre-bled hydraulics, and maintenance accessibility via One Way Bleed technology for quick servicing.
  • Ideal for gravel bikers and adventure cyclists seeking a stylish, dependable brake and shifter system with flat mount caliper, resin pads, and mineral oil hydraulics-perfect for rugged terrains and mixed surfaces.
Rotor IncludedNo
ColorBlack
Brake Caliper MountFlat Mount
Hydraulic Fluid TypeMineral Oil
Brake Lever UseRight
Pad CompoundResin
Rear Der/Shifter CompatibilityShimano Road
Hydraulic Hose Length1700
Adjustable ReachYes
Adjustable Contact PointNo
Drivetrain Speeds10
Defined ColorBlack
Front Der/Shifter CompatibilityShimano Road
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We pride ourselves on our ability to ship and deliver your gear with excessive speed! We ship from 22 locations throughout the United States and most orders will arrive in 3 days or less with Free Shipping on orders over $75!

The nitty gritty, for specific delivery timelines please pay attention to the delivery timelines on the product pages and the time frame estimated in the carts. If you need a part by a specific day, please contact us by chat, phone, or

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Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

We provide the you the ability to utilize multiple shipping & billing addresses, based upon what fits your current needs. However you are responsible to maintain and update any new address changes, as 365 Cycles will not be held liable for orders being shipped to an incorrect address.

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  • Just don't want it anymore: We have a 30-day return policy for orders within the US. We offer refunds on returned items that are brand new and in their undamaged, original packaging. Customers are responsible for the cost of return shipping. Damaged, installed, and used items as well as those without original packaging are not eligible for returns. If it's returned in this condition it may be denied and sent back to you

If you need to return your order please email us at info@365cycles.com, call us at 603-968-5797, or use the live chat on our site.

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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


Company Core Values: 

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. 

Customer Loyalty

Put yourself in their shoes and support those who support us.

You Control the Outcome

If it is to be, it’s up to me" You are personally responsible for controlling the outcome.

Seek Understanding

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Progress Not Perfection

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Will to Win

Customers, 365 Team, Partners, all need the will to win. Bring the Will to Win to every conversion.

Keep Moving

Move the body, move the mind, and remove any hurdles to achieving an active lifestyle.

Do the Right Thing:

Doing the right thing is more important than doing the thing right.

Stronger together:

If you want to go fast, go alone, if you want to go far, go together. Get your team involved and become stronger together.

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