Shimano ST-RX825 GRX Di2 STI Lever & BR-RX820 Front Caliper – 12-Speed Hydraulic Control for Gravel

Take command of gravel and adventure rides with the left-hand Shimano ST-RX825 Di2 STI lever and BR-RX820 front caliper. With wireless 12-speed Di2 shifting and precision hydraulic braking, this setup delivers a clean, efficient, and ultra-reliable cockpit for modern mixed-terrain cycling.

Refined Fit for Flared Handlebars

The left-side ST-RX825 lever is tailored for comfort on long, rough rides. Its raised hood shape, ribbed texture, and anti-slip coating enhance grip and control. With SD300 satellite shifter compatibility and Front Shift Next customization, you get full 2x Di2 control and wireless freedom powered by two long-lasting CR1632 batteries.

Compact, Quiet Braking

The included BR-RX820 front caliper improves modulation and reduces brake noise thanks to 10% wider pad clearance. Compatible with Shimano Ice Technologies pads and featuring One Way Bleeding, it’s engineered for low-maintenance, high-performance braking in gravel environments.

PRODUCT SPECIFICATIONS

• Lever Model: ST-RX825-L
• Series: Shimano GRX 2×12-speed Di2
• Shifting: Wireless Di2 electronic
• Brake Type: Hydraulic disc
• Lever Features: Textured hood, anti-slip coating, satellite shifter support (SD300), Front Shift Next
• Caliper Model: BR-RX820-F
• Mount Type: Flat mount
• Piston: 2
• Pad Standard: L05A-RF Resin (w/ fin)
• Pad Options: K05S-RX Resin (w/o fin), L04C-MF Metal (w/ fin)
• Brake Hose: SM-BH90-JK-SSR, Straight connection
• Oil: Shimano Mineral
• Bleeding System: One Way Bleeding
• Reach Adjust / Free Stroke: Yes
• Recommended Rotor: RT-CL800

Searching for Shimano GRX Di2 components in Perth? Drop by George’s Bike Shop Balcatta – your local Shimano gravel bike experts offering Perth-wide support and expert advice.

ABOUT SHIMANO

Shimano continues to lead the cycling world with advanced technology and unbeatable reliability. Trusted by riders across the globe, Shimano GRX components are purpose-built to handle rougher roads, looser surfaces, and longer days in the saddle.

Shimano Australia