Shimano GRX FD-RX825 Di2 Front Derailleur

The Shimano GRX FD-RX825 Di2 Front Derailleur delivers fast, precise front shifting for GRX 2x12-speed gravel drivetrains. Engineered to maintain reliable performance even under heavy pedaling loads, it provides smooth gear changes across varied terrain, helping riders stay efficient and in control whether climbing, descending, or riding long mixed-surface routes.

Designed around Shimano's gravel-specific drivetrain architecture, the FD-RX825 utilizes a +2.5mm wider chainline than standard road front derailleurs, increasing tire clearance and allowing compatibility with larger gravel tires. The derailleur also supports a 17-tooth front chainring difference, providing a wider gearing range for tackling everything from steep climbs to high-speed sections.

As part of Shimano's wireless Di2 ecosystem, the FD-RX825 supports Full Synchronized Shift and Semi-Synchronized Shift modes, allowing the system to automatically coordinate front and rear shifts for optimal cadence and gear selection. Riders can also customize shifting behavior through Shimano's E-TUBE PROJECT app, including the FRONT SHIFT NEXT function for simplified front shifting control.

Key Features

• Gravel-Specific Wide Chainline – +2.5mm chainline increases tire clearance compared to standard road front derailleurs
• 17-Tooth Capacity – Supports wider gearing combinations for versatile gravel riding
• Wireless Di2 Integration – Compatible with Full Synchronized and Semi-Synchronized Shift modes
• Customizable Shifting – Configure shifting behavior and FRONT SHIFT NEXT functionality through Shimano E-TUBE PROJECT
• Fast, Reliable Front Shifting – Consistent performance under load across mixed terrain and changing conditions