Shift/Brake Lever Shimano GRX ST-RX825 Di2 Left, 2x12

Shift/Brake Lever Shimano GRX ST-RX825 Di2 Left, 2x12

The Shimano GRX Di2 ST-RX825 is a left-hand 2x12-speed electronic Dual Control STI shift/brake lever designed specifically for gravel and cyclocross bikes. Part of the GRX Di2 RX825 groupset, it is built for use with hydraulic disc brakes, delivering outstanding control and reliability in demanding riding conditions.

Di2 electronic shifting ensures ultra-precise and smooth front shifting between two chainrings. Wireless connectivity via Shimano’s Di2 chip reduces cable clutter and simplifies setup for a cleaner cockpit. Gravel-optimized ergonomics, an anti-slip lever surface and adjustable reach allow riders to fine-tune lever position for maximum comfort and control. Combined with powerful hydraulic disc braking, the ST-RX825 provides reliable braking force and confident grip on steep descents and rough gravel terrain.

• Application: Gravel, Cyclocross
• Group: GRX Di2 RX825
• Model: ST-RX825-L
• Type: Dual-Control (STI), Di2
• Mount: Left
• Front speeds: 2-speed (2x12)
• Reach adjustment: Yes, with tool
• Handlebar diameter: 23.8 mm / 24.2 mm
• Brake type: Hydraulic disc brake
• Cable port: Straight
• Recommended hose: SM-BH90-JK-SS
• Recommended caliper: BR-RX820
• Recommended rotor: SM-RT800 / SM-RT70 / SM-RT64
• Compatible electric wire: EW-SD300 (if wired connection required)
• E-TUBE Project: Yes
• E-TUBE port: 1
• E-TUBE plug: 0
• Di2 wireless chip: Yes
• Battery: CR1632 x 2