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Shimano GRX Di2 Hydraulic Flat Rear Right Disc Brake Kit ST-RX825 + BR-RX820 + 1700mm Hose
Shimano GRX Di2 Hydraulic Flat Rear Right Disc Brake Kit ST-RX825 + BR-RX820 + 1700mm Hose
The price has not been reduced in the last 30 days. The recommended price is set by the manufacturer and is shown for reference only.
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ST-RX825 (LEVER)
The 12-speed SHIMANO GRX Di2 DUAL CONTROL LEVER delivers fast, wireless shifting for gravel and mixed-terrain riding. The ergonomic lever features raised hoods, ribbed surface texture, and an anti-slip coating on the brake lever for increased security and control. The hood body is newly optimized for seamless integration with flared handlebars while retaining the gravel-specific third button location. To complete the cockpit, RX825 levers are compatible with three satellite shifter options and feature SHIMANO FRONT SHIFT NEXT functionality to maximize rider customization options.
BENEFIT
Clean cockpit with fast and reliable wireless shifting
Better comfort and control on mixed terrain
Customizable shifting setup
FEATURE
3 to 4 years of battery life with easy-to-change CR1632 shifter batteries (Initial shifter batteries may have a shorter battery life than stated above.)
Anti-slip coating on brake levers
Raised hoods and textured surface
Optimized for use with flared handlebars
Compatible with SHIMANO's three SW-RS801 satellite shifter options
Features SHIMANO FRONT SHIFT NEXT functionality
PRODUCT SPECIFICATIONS
Model No: ST-RX825-R
Series: GRX
Shifter type: DUAL CONTROL LEVER
Remote switch: Yes
Brake lever
Brake hose (kit): SM-BH90-JK-SSR
Hose joint: Straight
Brake hose color (kit)|1: Black
Recommended brake caliper: BR-RX820
Oil: SHIMANO Mineral
Reach adjust: Yes
Clamp band (mm): 23.8-24.2
Funnel bleeding: Yes
Free stroke adjust: Yes
SERVO WAVE: Yes
Di2 connectivity wireless: Di2 shifting: Yes
Firmware update by E-TUBE PROJECT: Yes
SD50 port (pcs): 0
SD300 port (pcs): 1
SD50 connector (pcs): 0
SD300 connector (pcs): 0
Port for SD50 remote sprinter shifter (pcs): 0
Port for SD300 satellite shifter (pcs): 1
Battery: CR1632 x 2
Color: Series color
BR-RX820 (CALIPER)
The GRX BR-RX820 disc brake caliper brings a new level of control to gravel cycling with enhanced modulation and a quicker initial braking point. And despite its smaller construction, the system is quieter and easier to maintain.
BENEFIT
10% wider pad clearance decreases brake noise
Maintenance-friendly bleeding process
PRODUCT SPECIFICATIONS
Model No: BR-RX820
Series: GRX
Brake type: Hydraulic disc brake
Brake hose (kit): SM-BH90-JK-SSR
Hose joint: Straight
Brake hose color (kit): 1: Black
J-Kit spec (for OEM): Yes
ICE TECHNOLOGIES pad compatible caliper: Yes
Pad
Standard 1: K05S-RX Resin (w/o fin)
Standard 2: L05A-RF Resin (w/ fin)
Option 1: L04C-MF Metal (w/ fin)
Fixing screw spec for rear mount
10 mm mount: Yes
15 mm mount: Yes
20 mm mount: Yes
25 mm mount: Yes
30 mm mount: Yes
35 mm mount: Yes
Recommended brake lever: ST-RX820 ST-RX820-LA BL-RX820-L
Recommended disc brake rotor: RT-CL800
Oil: SHIMANO mineral
ONE WAY BLEEDING: Yes
Mount type: Flat mount
Piston: 2
Caliper fixing screw
Tool size: 4 mm
Anti loosen method: Screw fix pin+Snap ring
Pad mount: Pad axle
Average weight: 136
Data sheet
No customer reviews for the moment.
Gravel rider with Shimano GRX Di2 electronic shifting
Designed for riders using Shimano GRX Di2 on gravel and mixed terrain who want an integrated, wireless and fast brake-shift control.
Riders seeking control and modulation at the rear brake
Suitable for those who want more progressive braking, with an ergonomic lever and BR-RX820 calliper for more precise control of the hydraulic disc brake.
Clean cockpit configurations for gravel use
Recommended for riders who want a tidy cockpit, with wireless controls and integration with flare handlebars.
Ideal
Gravel rides on mixed surfaces
The kit is designed for gravel and mixed terrain, with an ergonomic lever and suitable control for riders alternating between fast sections and rougher stretches.
Gravel · Mixed terrain · Ergonomic lever
Very suitable
Rear braking with precise control
The BR-RX820 calliper offers modulation and a more immediate bite point, useful when progressive and manageable braking is required.
Hydraulic disc brake · Modulation · BR-RX820 calliper
Very suitable
Cockpit with Shimano GRX Di2 wireless controls
The ST-RX825 lever manages wireless shifting and integrates with Shimano GRX Di2 for clean, orderly control.
Shimano GRX Di2 · Wireless · ST-RX825
Suitable
Rear installation with dedicated Shimano standard
The kit uses the SM-BH90-JK-SSR brake hose at 1700 mm and the rear right calliper with a specification dedicated to rear mounting.
SM-BH90-JK-SSR · 1700 mm · Rear right
Gravel rider with Shimano GRX Di2 groupset
It is compatible with Shimano GRX Di2. The specified standard is SM-BH90-JK-SSR.
It is a rear right hydraulic disc brake kit.
The specified length is 1700 mm.
The lever is ST-RX825, with wireless shifting, anti-slip coating and reach adjustment.
The BR-RX820 calliper is a hydraulic disc brake with improved modulation and quieter operation.
It uses SHIMANO Mineral Oil.
Information prepared by the BSA team with the support of AI, based on the manufacturer's specifications.