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Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hyd Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hyd Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hyd Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hyd Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hyd Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hyd Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hyd Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount

SKU: HBSL0243

Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hyd Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount

Regular price $595.00
$661.95 Sale price $595.00 Regular price
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Description
Specifications

Upgrade your gravel and mixed-terrain riding with the Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - the ultimate combination of precision, durability, and innovative engineering designed specifically for performance-focused cyclists.

Materials & Construction

Crafted with lightweight, high-strength materials, the Shimano GRX Di2 components feature corrosion-resistant finishes and meticulously engineered hydraulic calipers utilizing resin pads with enhanced heat dissipation fins. The flat mount brake calipers are designed for reliable performance and easy maintenance, ensuring long-lasting durability on rugged terrains. The ergonomic levers incorporate anti-slip coatings and textured raised hoods, providing superior grip and comfort even during prolonged rides.

Performance & Engineering

The 12-speed Di2 electronic shifting system delivers ultra-fast, wireless gear changes that are both precise and reliable, even in demanding gravel conditions. Powered by two long-lasting CR1632 batteries with a 3-4 year lifespan, this setup ensures consistent performance without frequent maintenance. The hydraulic brake system employs mineral oil for smooth modulation and powerful stopping power, with a quick and one-way bleed process that simplifies system maintenance.

Components & Technology

The GRX RX825 Dual Control Levers are compatible with Shimano's FRONT SHIFT NEXT functionality, allowing riders to program a single button to control front derailleur movements-simplifying gear management and enhancing customization. The RX820 2-piston caliper features a 10% wider pad clearance for decreased noise and increased heat dissipation, ensuring quiet, consistent braking performance. Plus, the system is compatible with Shimano SW-RS801 satellite shifters (sold separately), expanding your cockpit customization options.

Style & Use Case

Designed for gravel, cyclocross, and mixed-terrain adventures, this right/rear set combines sleek black aesthetics with a functional, ergonomic design that seamlessly integrates with flared handlebars for a clean cockpit. Whether tackling technical descents, steep climbs, or long gravel routes, this setup provides maximum control, confidence, and style with its modern, low-profile appearance.

Innovative & Differentiating Features

- Wireless, 12-speed electronic shifting with rapid and reliable response

- Compatible with multiple satellite shifters for tailored cockpit setup

- Adjustable reach for personalized fit and comfort

- Highly modular design for maintenance and customization

- Hydraulic disc brake with resin pads for heat management and minimal noise

- Quick, one-way bleeding system for easy hydraulic system upkeep

Specifications

- Hydraulic actuation with flat mount calipers (no rotor included)

- Compatible with Shimano Road Di2 12-speed systems

- Utilizing mineral oil hydraulic fluid for smooth modulation

- Includes finned L05A resin pads for optimized heat dissipation

- Hydraulic hose length of 1700mm for versatile installation options

- Adjustable reach to suit different hand sizes and preferences

Elevate your gravel adventures with the Shimano GRX ST-RX825 Di2 Shift/Brake Lever paired with the BR-RX820 Hydraulics - engineered for superior control, seamless shifting, and rugged durability. Designed for the modern gravel rider who demands peak performance and customization in every ride.

  • Seamlessly integrated wireless Shimano Di2 electronic shifting with 12-speed compatibility, ensuring quick and reliable gear changes on gravel and adventure rides.
  • Engineered with ergonomic raised hoods, textured surfaces, and anti-slip coatings for superior grip and control in demanding terrain conditions.
  • Features innovative Shimano FRONT SHIFT NEXT technology, allowing riders to customize and control front derailleur shifts with a single programmable button for enhanced cockpit versatility.
  • Combines high-performance RX820 hydraulic disc brake calipers with 2-piston design and resin pads for precise modulation, quiet operation, and powerful stopping power on mixed terrain.
  • Constructed with durable materials and flat mount design, the system offers easy maintenance, heat dissipation, and compatibility with flared handlebars for a comfortable and aggressive gravel riding experience.
Brake Lever ActuationHydraulic
Rotor IncludedNo
Brake Caliper MountFlat Mount
Brake Lever UseRight
Rear Der/Shifter CompatibilityShimano Road Di2
Drivetrain Speeds12
ColorBlack
Hydraulic Fluid TypeMineral Oil
Pad CompoundResin
Hydraulic Hose Length1700
Includes BrakeYes
Adjustable ReachYes
Adjustable Contact PointYes
Defined ColorBlack
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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!

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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.

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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. 

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

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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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