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Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - Left/Front, 2x, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - Left/Front, 2x, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - Left/Front, 2x, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - Left/Front, 2x, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - Left/Front, 2x, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - Left/Front, 2x, Flat Mount
Load image into Gallery viewer, Shimano GRX ST-RX825 Di2 Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - Left/Front, 2x, Flat Mount

SKU: HBSL0245

Shimano GRX ST-RX825 Di2 12-Speed Dual Control Shift/Brake Lever with BR-RX820 Hydraulic Disc Brake Caliper - Wireless Gravel and Cyclocross Ergonomic Components, Flat Mount, Anti-Slip, Customizable Shifting, Lightweight, Durable, For Flared Handlebars

Regular price $595.00
$661.95 Sale price $595.00 Regular price
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This is a pre order item. We will ship it when it comes in stock.

$10 Gift Card

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$25 Gift Card

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$75 Gift Card

at 1,000 points

Description
Specifications

Experience superior control and seamless shifting with the Shimano GRX ST-RX825 Di2 Left/Front Shift/Brake Lever paired with the BR-RX820 Hydraulic Disc Brake Caliper - designed specifically for gravel, adventure, and mixed-terrain riding. This high-performance, 12-speed electronic shifting system offers precise, wireless operation, elevating your gravel cycling experience with advanced engineering and innovative features.

Materials & Construction:

crafted with lightweight, durable materials, the Shimano GRX RX825 lever features ergonomic raised hoods and a textured, anti-slip surface coating for enhanced grip and confidence on rugged terrain. The BR-RX820 hydraulic disc caliper utilizes a robust aluminum body with heat-dissipating finned pads, ensuring reliable stopping power in all conditions while maintaining a quiet, maintenance-friendly operation.

Performance & Engineering:

Equipped with Shimano's advanced Di2 electronic shifting technology, the RX825 lever provides lightning-fast, wireless gear changes with minimal effort. Its customizable Shimano FRONT SHIFT NEXT functionality allows riders to program a single button for front derailleur control, enabling quick and intuitive gear adjustments on demanding climbs or technical descents. The hydraulic caliper offers precise modulation, improved pad clearance (10% wider), and enhanced heat dissipation for consistent braking performance.

Components & Technology:

With a dual-piston hydraulic design, the BR-RX820 caliper boasts increased braking accuracy and reduced brake noise, thanks to resin pads with superior heat management. The system supports 12-speed drivetrain compatibility and is compatible with Shimano's SW-RS801-S/T/E satellite shifters (sold separately), providing additional cockpit customization options. The system features a one-way bleed process for effortless maintenance, ensuring your brakes stay responsive with minimal hassle.

Style & Use Case:

Built for gravel riders and adventure cyclists, the Shimano GRX ST-RX825/BR-RX820 combination blends sleek, black aesthetics with rugged durability. The flat mount brake caliper and slim lever design make for a clean, integrated cockpit that's optimized for flared handlebars. Whether tackling long gravel descents, technical trails, or mixed terrains, this setup delivers confidence-inspiring control and reliable, precise shifting.

Innovative & Differentiating Features:

- Wireless, 12-speed electronic shifting for quick, reliable gear changes

- Long-lasting CR1632 batteries with a 3-4 year lifespan, easy to replace

- Compatibility with Shimano Satellite Shifters for expanded control options

- Adjustable reach for tailored fit and comfort

- Heat-dissipating pads for improved braking performance and longevity

- Compatible with disc rotors (sold separately) to suit your specific build

Upgrade your gravel setup with the Shimano GRX ST-RX825 Di2 Hydraulic Shift/Brake Lever and BR-RX820 Caliper - engineered for durability, precision, and adventure-ready performance. Conquer any terrain with confidence, control, and ease.

  • Shimano GRX ST-RX825 Di2 Dual Control Lever with BR-RX820 Hydraulic Disc Brake Caliper offers precision shifting and reliable braking for gravel and mixed-terrain cycling, featuring advanced wireless 12-speed Di2 technology for seamless gear changes.
  • Constructed with high-quality materials, including durable anodized aluminum levers and resin pads with enhanced heat dissipation, this system ensures long-lasting performance and consistent braking power in rugged conditions.
  • Engineered with Shimano's innovative FRONT SHIFT NEXT functionality, allowing customizable front derailleur control with a single button, optimizing rider flexibility and reducing cockpit clutter for adventure-ready handling.
  • Designed for ergonomic comfort and security on rough terrains, the levers feature raised hoods, ribbed surfaces, and an anti-slip coating, coupled with compatibility for flared handlebars to improve control and grip during demanding gravel rides.
  • Includes a maintenance-friendly hydraulic braking system with wider pad clearance and finned L05A pads for noise reduction and heat management, delivering smooth, quiet braking performance even on extended, high-intensity gravel descents.
Brake Lever ActuationHydraulic
Double or TripleDouble
Rotor IncludedNo
Brake Caliper MountFlat Mount
Brake Lever UseLeft
Drivetrain Speeds12
Front Der/Shifter CompatibilityShimano Road Di2
ColorBlack
Hydraulic Fluid TypeMineral Oil
Pad CompoundResin
Hydraulic Hose Length1000
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!

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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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

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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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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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