The Shimano GRX RX400 series front derailleur offers easier and lighter chainring changes, thanks to the new mechanism structure and integrated cable tensioner. The design provides a chain line shift of 2.5 mm towards L’external, to allow Luse of wider tires for mixed surfaces.
Features
- Low energy use gearbox.
- Ergonomic power curve.
- New toggle mechanism.
- Natural derailleur lever travel.
- Easy and precise adjustment.
- Chainline: +2.5mm compared to traditional road derailleur.
- Compatible with tires up to 42 mm.
- Easy and precise derailleur adjustment.
- More cable routing options.
- Actual weight: 95 g.






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