Shimano GRX ST-RX810+BR-RX810 rear brake

Technical sheet

Shimano GRX ST-RX810+BR-RX810 rear brake

Name: Shimano GRX ST-RX810+BR-RX810 rear brake
Brand: Shimano
SKU: -137973178
Price: 93.99 USD
Availability: InStock
Rating: 4 (1 reviews)

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1 Reviews

4 Questions

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Size

Long

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Features of Shimano GRX ST-RX810+BR-RX810

Product description of Shimano GRX ST-RX810+BR-RX810 rear brake

Description summary

Conquer any terrain with the SHIMANO GRX ST-RX810 + BR-RX810 hydraulic disc brake set. Designed for gravel and all-road adventures, this premium combo offers exceptional control and reliability. The ergonomic ST-RX810 lever provides a secure, comfortable grip and light, precise shifting. Paired with the low-profile BR-RX810 caliper, enjoy superior stopping power and modulation in all conditions. Experience confidence-inspiring braking and seamless performance for your mixed-terrain explorations

SHIMANO GRX ST-RX810 + BR-RX810 Hydraulic Disc Brake Set

Category: Bike Parts
Subcategory: Brakes
Attributes: Disc Brake, Gravel cycling, Sets

Master the unpredictable nature of gravel cycling and mixed-terrain adventures with the SHIMANO GRX ST-RX810 lever and BR-RX810 hydraulic caliper brake set. Engineered from the ground up for the specific demands of all-road exploration, this premium combination delivers unparalleled control, reliability, and performance, allowing you to ride with unwavering confidence on tarmac, gravel, and dirt.

The SHIMANO GRX Dual Control Lever delivers light and responsive shifting for mixed-terrain riding. The ergonomic shifter design improves comfort and the textured, anti-slip brake lever increases control on bumpy terrain. This purpose-built design means your hands remain secure and comfortable, reducing fatigue on long-distance rides and providing a stable, confident grip when navigating challenging descents or technical sections. The shifting action is swift and precise, ensuring you can find the right gear instantly, with the same light operation found in SHIMANO´s top-tier road systems.

When it comes to braking power, this set excels. With a low-profile flat mount design, the SHIMANO GRX BR-RX810 hydraulic disc brakes provide greater control for mixed terrain riding. This system is finely tuned to offer superior power and modulation, giving you the ability to scrub speed with precision or come to a confident stop in any condition. The enhanced braking performance ensures that you can push your limits, knowing you have reliable stopping power at your fingertips.

This integrated brake set is the definitive choice for serious gravel cycling enthusiasts and adventurers who demand the best in control and reliability.
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Features:

ST-RX810 Dual Control Lever:
- Gravel Inspired Lever and Bracket Ergonomics: Optimized shape for multiple hand positions, providing comfort and a secure grip on rough surfaces.
- Anti-slip Brake Lever: Textured lever surface ensures a firm grip, even in wet and muddy conditions.
- Greater Mixed-Terrain Control: Ergonomics and lever feel are specifically designed to enhance rider confidence and handling on unpredictable terrain.
- Same Light Shifting Operation as Top Tier Systems: Enjoy crisp, responsive, and effortless gear changes synonymous with high-end SHIMANO components.

BR-RX810 Hydraulic Disc Brake Caliper:
- Excellent Heat Dissipation: Incorporates ICE TECHNOLOGIES for consistent, fade-free braking performance on long, demanding descents.
- Flat Mount and Anti-Mud Specification: A sleek, low-profile design that integrates seamlessly with modern gravel frames and offers improved clearance to prevent mud build-up.
- Convenient Tool Access: Thoughtfully designed for easier access during installation and maintenance procedures.
- Simple Wheel Replacement: The caliper design facilitates quick and hassle-free wheel changes on the trail or at home.
- Easy and Clean Bleeding System: Utilizes SHIMANO´s One-Way Bleeding system for straightforward, mess-free maintenance.
- Never Hesitate to Tackle Rough Surfaces: A powerful and reliable system that inspires confidence to ride harder and explore further.
- Simple Set Up and Maintenance: Engineered for user-friendly installation and long-term serviceability.
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Specifications:
- Brake Lever Model: BL-RX810
- Caliper Model: BR-RX810
- Placement: Left/Front
- Brake Hose: Included
- Brake Lever Mount: Clamp
- Brake Caliper Mount: Flat-Mount

Specifications

Manual

Technical specifications of Shimano GRX ST-RX810+BR-RX810

Number of pistons

2
Mount type

Flat Mount
Brake fluid type

Mineral Oil
Pad compound

Resin
Reach adjust

Yes
Rotor diameter compatibility

160 mm
Clamp diameter

22.2 mm
Color

Silver
Recommended Use

Gravel cycling
Brakes Type

Disc Brake
Product Type

Sets

Features of Shimano GRX ST-RX810+BR-RX810

Color Silver

Color

Silver

Recommended Use Gravel cycling

Recommended Use

Gravel cycling

Brakes Type Disc Brake

Brakes Type

Disc Brake

Product Type Sets

Product Type

Sets

Key differentiators

2-piston flat-mount caliper designed for excellent heat dissipation

Ergonomic lever with textured, anti-slip grip for enhanced control

Hydraulic disc brake system for superior stopping power and modulation

Lever reach adjustment for a customized fit and feel

Specifically engineered for gravel and mixed-terrain riding

Technology in Shimano GRX ST-RX810+BR-RX810 rear brake

Energy rating

Warnings

/ 5

1 Reviews

What our customers are saying about Shimano GRX ST-RX810+BR-RX810 rear brake

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Include AI Generated questions and answers

2026-07-30

Generated by AI and verified

What makes the Shimano GRX ST-RX810 lever comfortable for long rides?

Answer of Generated by AI and verified

The Shimano GRX ST-RX810 lever features an ergonomic design specifically for mixed-terrain riding. It includes a textured, anti-slip brake lever to enhance control on bumpy surfaces, which helps reduce hand fatigue and ensures a secure, comfortable grip during long-distance explorations.

* Generated by AI based on customer and product data

2026-07-30

Generated by AI and verified

What type of brake fluid is used in the GRX BR-RX810 hydraulic system?

Answer of Generated by AI and verified

This hydraulic disc brake system is designed to be used with Mineral Oil.

* Generated by AI based on customer and product data

2026-07-30

Generated by AI and verified

How many pistons does the Shimano GRX BR-RX810 caliper have?

Answer of Generated by AI and verified

The Shimano GRX BR-RX810 hydraulic disc brake caliper is equipped with 2 pistons to provide controlled stopping power.

* Generated by AI based on customer and product data

2026-07-30

Generated by AI and verified

Is this brake set suitable for road cycling as well as gravel?

Answer of Generated by AI and verified

Yes, while this brake set is specifically designed for the demands of gravel and mixed-terrain riding, its reliable performance and responsive shifting also make it suitable for all-road adventures, including tarmac. It offers excellent control across various conditions.

* Generated by AI based on customer and product data

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Frequently bought together

Best sellers

Use cases

Competitive Gravel Racing 100% Fit

Engineered specifically for the demands of gravel competition, this system provides the reliable, high-performance stopping power needed for technical courses and high-speed descents. The superior heat dissipation ensures consistent braking performance throughout long and grueling races.

intended_use: gravel,Excellent Heat Dissipation,Flat Mount caliper,2-piston design

All-Weather Gravel and Riding 90% Fit

This hydraulic disc brake system delivers consistent and powerful braking in a wide range of conditions, from dry and dusty trails to wet and muddy tracks. Its reliable performance makes it ideal for long-distance adventure cycling and bikepacking where conditions are unpredictable.

brake_type: disc,intended_use: gravel,Excellent Heat Dissipation,hydraulic_fluid_type: Mineral Oil

Cyclocross 80% Fit

With its powerful 2-piston design and Flat Mount standard, this brake system is well-suited for the sharp, repetitive braking required in cyclocross. The excellent heat dissipation helps maintain performance lap after lap on demanding courses.

piston_count: 2,mount_type: Flat Mount,Excellent Heat Dissipation,brake_type: disc

Custom Gravel Bike Builds and Upgrades 100% Fit

As a top-tier component, this brake set is a premier choice for custom builds or upgrading a gravel bike for elite performance. The adjustable lever reach allows for personalized ergonomics, while the Flat Mount caliper ensures compatibility with modern, high-performance frames.

brand: shimano,lever_reach_adjustment: Yes,mount_type: Flat Mount,intended_use: gravel

Best for

Best for Competitive Gravel Racers

This system delivers the top-tier braking efficiency and precision control needed to maintain speed and confidence on demanding gravel race courses.

Based on product features

Ideal for All-Terrain Dominance

Engineered specifically for gravel, this brake offers superior handling and responsive power across diverse surfaces, from loose dirt to hardpack.

Based on product features

The Professional's Choice for Precision

With its two-piston design and excellent heat dissipation, this brake provides consistent, powerful, and precise stopping capability under the most demanding conditions.

Based on product features

Benefits

FunctionalReliable Braking for Gravel

Feel confident and in control on varied surfaces, knowing your brakes are specifically designed for the demands of gravel riding. This system provides the assurance you need to tackle challenging descents and unpredictable terrain.

intended_use: gravel

brake_type: disc

FunctionalTailor Your Brake Levers for a Perfect Fit

Adjust the brake levers to match your hand size and riding preference for improved comfort and control. This customization allows for a more natural and responsive feel, reducing hand fatigue on long rides.

lever_reach_adjustment: Yes

Ideal buyer profiles

The Gravel Grinder

This cyclist spends their weekends exploring unpaved roads, fire trails, and mixed-terrain routes. They require components that can handle the unpredictable nature of gravel riding, from long descents to muddy sections, without compromising performance.

This product is specifically designed for gravel use, offering the powerful and consistent performance of a hydraulic disc brake. With features like excellent heat dissipation and a robust 2-piston design, it provides the control and reliability needed to confidently tackle mixed-terrain adventures.

The All-Road

This rider uses their bike for daily transportation, often on routes that include a mix of pavement, bike paths, and occasional rough patches. Safety and reliability in all weather conditions are paramount, as is the ability to easily maintain their equipment.

The hydraulic disc brake system offers superior stopping power over traditional rim brakes, which is a significant advantage in urban traffic and variable weather. The lever reach adjustment allows for a customized fit, enhancing control and comfort during daily rides. Its use of mineral oil also aligns with needs for straightforward service.

The Custom Bike Builder

This individual is meticulously assembling a bike from the frame up, selecting each component to meet a specific performance goal or aesthetic. They are knowledgeable about parts compatibility and prioritize quality components that are designed for their intended cycling discipline.

As a dedicated gravel component from Shimano, this brake set meets the specific needs of a modern all-road or gravel build. The Flat Mount design is the current standard for these frames, and features like lever reach adjustment provide the customization that discerning builders look for. It's a purpose-built solution for a high-performance gravel machine.

Competitive features

When choosing the right hydraulic disc brake set, the primary distinction often comes down to your intended cycling discipline. The Shimano GRX ST-RX810+BR-RX810 is specifically engineered for the demands of gravel and mixed-terrain riding, setting it apart from road-focused alternatives like the Shimano Ultegra series. While both lines offer exceptional braking performance, the GRX series features ergonomics and control tailored for unpredictable surfaces, whereas the Ultegra series is optimized for pavement.

Where it excels

The GRX ST-RX810 lever is designed with an ergonomic shape specifically for the varied hand positions and rougher terrain encountered in gravel and all-road cycling, providing a secure and comfortable grip. | Engineered for mixed-terrain explorations, this brake set delivers superior stopping power and modulation, giving you confidence and control on loose or unpredictable surfaces where road-specific brakes might feel less forgiving.

Consider alternatives if...

If your riding is exclusively on paved roads and you prioritize features like electronic shifting, an alternative like the Shimano Ultegra Di2 R8170 offers seamless integration with electronic drivetrains. | For riders focused purely on road cycling with mechanical shifting, the Shimano Ultegra ST-R8020 series provides performance tailored to that discipline and may present a different value proposition.

Verdict

The Shimano GRX ST-RX810+BR-RX810 rear brake set is an excellent choice for cyclists dedicated to gravel, cyclocross, or all-road adventures. Its design prioritizes control, reliability, and comfort on varied and challenging surfaces. While Ultegra components are benchmarks for road performance, the GRX series is purpose-built to master the unpredictable nature of off-pavement riding, making it the superior option for its intended use case.

Specs comparison