Shimano GRX RX825 Di2 Front Derailleur

The Shimano GRX RX825 Di2 Front Derailleur brings electronic precision to front shifting on gravel and mixed-terrain builds — the kind of precision that matters most when you're pushing a big gear on a rough road or switching chainrings mid-climb. Compared to standard road front derailleurs, it runs a +2.5mm outboard chain line, which translates directly to better tyre clearance for the wider frames and bigger tyres that define modern gravel geometry.

It supports a 17-tooth front gearing range, giving you real flexibility between a climbing-oriented small ring and a road-capable large ring without compromising shift quality at either end. The integration with Full and Semi-Synchronized shift modes means the rear derailleur can automatically compensate when you cross the front — a setup that rewards riders who want to focus on the road rather than the drivetrain. The Front Shift Next function adds a layer of customisation, letting you define how and when front shifts are triggered to match your riding style.

Shimano GRX RX825 Di2 Front Derailleur Specs at a Glance

• Electronic Di2 actuation
• +2.5mm outboard chain line vs. standard road front derailleurs — improves tyre clearance for gravel frames
• 17-tooth front gearing range support
• Compatible with Full and Semi-Synchronized shift modes
• Front Shift Next function for customisable shift behaviour