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Shimano GRX Di2 Hydraulic Flat Front Left Disc Brake Kit ST-RX825 + BR-RX820 + 1000mm Hose
Shimano GRX Di2 Hydraulic Flat Front Left Disc Brake Kit ST-RX825 + BR-RX820 + 1000mm 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: 146
Data sheet
No customer reviews for the moment.
Cyclists with Di2 gravel drivetrains
Designed for riders using Shimano GRX Di2 12v on gravel and mixed terrain. It integrates a DUAL CONTROL LEVER, wireless shifting and compatibility with satellite controls.
Those seeking control and modulation on mixed terrain
Suitable for anyone wanting a hydraulic disc brake with an ergonomic lever, anti-slip finish and BR-RX820 caliper for more controlled braking.
Shimano setups with a tidy cockpit
Indicated for those looking for an integrated Shimano system with SM-BH90-JK-SSR brake hose and a configuration designed for a clean cockpit.
Ideal
Gravel rides on variable surfaces
The kit is designed for gravel and mixed terrain, with an ergonomic lever and hydraulic braking to handle changes in pace effectively.
Gravel · Mixed terrain · Hydraulic disc brake
Very suitable
Mixed routes with braking control
The BR-RX820 caliper offers modulation and a more immediate brake engagement point, useful when the surface changes frequently.
Modulation · Variable surface · BR-RX820 caliper
Very suitable
Shimano GRX Di2 12v builds
The ST-RX825 lever is compatible with Shimano and Di2 wireless connectivity, for a system consistent with electronic GRX groupsets.
Shimano · GRX Di2 · 12v
Suitable
Cockpits with clean integration
The optimisation for flare handlebars and the presence of the SM-BH90-JK-SSR hose help keep the cockpit tidy.
Flare handlebars · SM-BH90-JK-SSR · Cockpit
Advanced gravel cyclist
The kit is compatible with Shimano. It is designed for the GRX Di2 12v ecosystem.
It is a hydraulic disc brake. The caliper is the BR-RX820.
It uses the SM-BH90-JK-SSR hose with a straight connector. The hose listed in the specifications is 1000 mm.
It requires SHIMANO Mineral Oil. This is the fluid specified for the ST-RX825 lever and the BR-RX820 caliper.
The lever is for 12v. This places it in the GRX Di2 group shown in the specifications.
The stated component weight is 146.
Information prepared by the BSA team with the support of AI, based on the manufacturer's specifications.